SCHEDULE 1 Installation of devolved associated lines
Article 5(2)

“PART 17A Installation of devolved associated lines
Class A

Permitted Development
A. Development by statutory undertakers for the generation, transmission or supply of electricity for the purposes of their statutory undertaking consisting of—
(a) the installation of a devolved associated line with a nominal voltage not exceeding 20 kilovolts used or intended to be used for supplying a single consumer;
(b) the installation of so much of a devolved associated line as is or will be within premises in the occupation or control of the person responsible for its installation;
(c) the installation of a devolved associated line which—
(i) connects an electric line installed below ground with apparatus mounted on a pole or structure; and
(ii) is attached to the pole or structure throughout its length except where it passes through a fuse or other apparatus;
(d) the installation for a period not exceeding six months of a devolved associated line which connects two points on an existing line which are no further apart than the maximum distance so as to provide a diversion for the existing line;
(e) the installation of a devolved associated line attached to a building where the building in question crosses a road, railway or watercourse and its principal purpose is not the support of the line;
(f) the installation of a devolved associated line which replaces an existing line whether or not it is installed in the same position as the existing line in question;
(g) the installation of one or more additional poles to support an existing devolved associated line;
(h) the installation of a devolved associated line which has been, or is to be, installed in accordance with a power conferred by, or by an order made under, an Act of Parliament or an Act of the National Assembly for Wales.

A.1 Development not permitted
1 Development is not permitted by Class A if:
(a) in the case of any Class A(d) and (f) development, any part of the line is within a European site or a site of special scientific interest;
(b) (save as provided for in paragraph A.2(3)) in the case of any Class A(d), (f) or (g) development—
(i) the line is to be installed in a different position from the existing line; or
(ii) the height above the surface of the ground of any support for the line will exceed the height of the highest support which is to be replaced;
(iii) the installation will be in a National Park or an area of outstanding natural beauty,
and it is determined there is likely to be a significant adverse effect on the environment;
(c) in the case of any Class A(e) development, the building in question is a scheduled monument, a listed building or in a conservation area;
(d) in the case of any Class A(f) development the line has a nominal voltage greater than the nominal voltage of the existing line.
2 For the purposes of paragraph A.1(b) it is determined that there is likely to be a significant adverse effect on the environment if—
(a) notice is given by the person proposing to carry out the installation to the local planning authority of that proposal; and
(b) the authority, within six weeks of receiving that notice—
(i) determines that if the installation were completed in accordance with the proposal it would in the opinion of that authority be likely to have a significant adverse effect on the environment; and
(ii) notifies the person by whom the notice was given and the Welsh Ministers of that determination.

A.2 Conditions
1 Development is permitted in the case of any Class A (f) and (g) development subject to the following conditions—
(a) that any conditions applicable to the existing line contained in—
(i) a consent granted under section 37(1) of the Electricity Act 1989 (consent required for overhead lines) or paragraph 10(b) of the Schedule to the Electric Lighting (Clauses) Act 1899; or
1989 c. 29. Section 37(1) was amended by paragraph 33 of Schedule 2 to the Planning Act 2008 (c. 29) and by section 42 of the Wales Act 2017 (c. 4).
1899 c. 19. The Act was repealed by the Electricity Act 1989.
(ii) an order granting development consent under the Planning Act 2008, or
2008 c. 29. See section 31 for the definition of “development consent”.
(iii) a planning permission relating to the height, design or position of the existing line which are capable of being applied to the installation;
are complied with;
(b) that the height above the surface of the ground of any support for the line does not exceed the height of the highest existing support or support which is being replaced by more than 10 per cent;
(c) that where the line is installed in a different position from the existing line the distance between any small support and the existing line does not exceed 30 metres and the distance between any other support and the existing line does not exceed 60 metres; and
(d) that where the line is installed in a different position from the existing line, the existing line is removed within twelve months from the date on which the installation of the line which replaces it is completed.
2 Development is permitted in the case of any Class A(d) development subject to the conditions that—
(a) at the end of a period of six months from the date on which the installation is completed or on the ending of the diversion (whichever is the sooner) the devolved associated line is removed; and
(b) the land on which any operations have been carried out is restored as soon as reasonably practicable to its condition before the development took place.
3 Where it is necessary to make emergency repairs to an existing devolved associated line in a National Park or an area of outstanding natural beauty—
(a) the limitation in paragraph A.1.(1)(b) does not apply; and
(b) development is permitted subject to the condition that the person making those emergency repairs must notify the local planning authority as soon as practicable that those repairs have been, are being or will be made.

A.3 Interpretation of Class A
1 For the purposes of this Part—
“devolved associated line” means an electric line which—
(a) is above ground;
(b) has a nominal voltage of 132 kilovolts or less, and
(c) is associated with the construction or extension of a devolved Welsh generating station granted planning permission or consented to on or after 1 April 2019;
“devolved Welsh generating station” has the same meaning as in section 37(2B) of the Electricity Act 1989;
“electric line” has the meaning assigned to that term by section 64(1) of the Electricity Act 1989 (interpretation etc. of Part 1);
“European site” has the same meaning as in regulation 8 of the Conservation of Habitats and Species Regulations 2017);
“an existing line” means an electric line which—
(a) has been installed or is kept installed above ground in accordance with a consent granted under section 37(1) of the Electricity Act 1989 or an order granting development consent under the Planning Act 2008 or planning permission; or
Section 37(1) was amended by paragraph 33 of, and Schedule 2 to, the Planning Act 2008 (c. 29).
(b) has been installed above ground and is an electric line to which section 37(1) of the Electricity Act 1989 does not apply by virtue of paragraph 5(4) or (5) of Schedule 17 to that Act;
“small support” means a support for an electric line which does not exceed 10 metres in height.
Section 37(2B) was inserted by section 42(3) of the Wales Act 2017 (c. 4).
There are amendments to section 64(1) not relevant to this Order.
S.I. 2017/1012.
2 For the purposes of Class A(d) development “maximum distance” means—
(a) in relation to a devolved associated line which has a nominal voltage less than 66 kilovolts, 500 metres; and
(b) in relation to any other devolved associated line, 850 metres.
3 For the purposes of paragraph A.2(1)(c), any reference to the distance between a support and an existing line is a reference to the shortest distance between the centre of the base of that support and an imaginary line through the centre of the base of each support for the existing line.”

SCHEDULE 2 Substitution of Part 24
Article 6

“Part 24
DEVELOPMENT BY ELECTRONIC COMMUNICATIONS CODE OPERATORS (WALES) Class A

Permitted Development
A. Development by or on behalf of an electronic communications code operator for the purpose of the operator’s electronic communications network in, on, over or under land controlled by that operator or in accordance with the electronic communications code, consisting of—
(a) the installation, alteration or replacement of any electronic communications apparatus,
(b) the use of land in an emergency for a period not exceeding eighteen months to station and operate moveable electronic communications apparatus required for the replacement of unserviceable electronic communications apparatus, including the provision of moveable structures on the land for the purposes of that use, or
(c) development ancillary to radio equipment housing.

Development not permitted
A.1. Development is not permitted by Class A(a) if—
(a) in the case of the installation of ground-based apparatus (other than a mast), the apparatus, excluding any antenna, would exceed a height of 15 metres above ground level;
For the height of apparatus and ground level, see Article 1(3).
(b) in the case of the alteration or replacement of ground-based apparatus (other than a mast), the apparatus excluding any antenna, would when altered or replaced exceed—
(i) the height of the existing apparatus, or
(ii) a height of 15 metres above ground level,
whichever is the greater;
(c) in the case of the installation of a ground-based mast, the mast, excluding any antenna, would exceed a height of—
(i) 20 metres above ground level where the mast is on protected land; or
(ii) 25 metres above ground level where the mast is on unprotected land;
For the height of a mast, see paragraph A.4(2)(a) below.
(d) in the case of the alteration or replacement of a ground-based mast on protected land, the mast, excluding any antenna, would when altered or replaced exceed—
(i) the height of the existing mast, or
(ii) a height of 20 metres above ground level,
whichever is the greater;
(e) in the case of the alteration or replacement of a ground-based mast on unprotected land, the mast, excluding any antenna, would when altered or replaced exceed—
(i) the height of the existing mast, or
(ii) a height of 25 metres above ground level,
whichever is the greater;
(f) in the case of the alteration or replacement of a ground-based mast—
(i) where the mast is on article 1(5) land or on unprotected land, the mast would when altered or replaced exceed its original width at any given height by more than one metre or one third whichever is the greater;
For the width of a mast, see paragraph A.4(2)(b) below.
(ii) where the mast is on land which is or is within a site of special scientific interest, the mast would when altered or replaced exceed its original width at any given height;
(g) in the case of the installation, alteration or replacement of apparatus on a building or other structure—
(i) the height of the apparatus (taken by itself) would exceed—
(aa) 15 metres, where it is installed, or is to be installed, on a building or other structure which is 30 metres or more in height; or
(bb) 10 metres in any other case;
(ii) the highest part of the apparatus when installed, altered or replaced would exceed the height of the highest part of the building or structure by more than—
(aa) 10 metres, in the case of a building or structure which is 30 metres or more in height;
(bb) 8 metres, in the case of a building or structure which is more than 15 metres but less than 30 metres in height; or
(cc) 6 metres in any other case;
(h) in the case of the installation, alteration or replacement of apparatus (other than an antenna) on a mast, the height of the mast would, when the apparatus was installed, altered or replaced, exceed any relevant height limit specified in respect of apparatus in paragraphs (c) to (g) and for the purposes of applying the limit specified in paragraph (g)(i), the words “(taken by itself)” are to be omitted;
(i) in the case of the installation, alteration or replacement of any apparatus other than—
(i) a mast,
(ii) an antenna,
(iii) a public call box,
(iv) any apparatus which does not project above the level of the surface of the ground, or
(v) radio equipment housing,
the ground or base area of the structure would exceed 1.5 square metres;
(j) in the case of the installation, alteration or replacement of an antenna on a building or structure (other than a mast) which is less than 15 metres in height, on a mast located on such a building or structure, or, where the antenna is to be located below a height of 15 metres above ground level, on a building or structure (other than a mast) which is 15 metres or more in height—
(i) in the case of antennas other than small cell antennas, the antenna is to be located on a wall or roof slope facing a highway which is within 20 metres of the building or structure on which the antenna is to be located;
(ii) in the case of dish antennas, the size of any dish would exceed 0.9 metres or the aggregate size of all of the dishes on the building, structure or mast would exceed 4.5 metres, when measured in any dimension;
(iii) in the case of antennas other than dish antennas, the development (other than the installation, alteration or replacement of one small antenna or a maximum of two small cell antennas) would result in the presence on the building or structure of—
(aa) more than three antenna systems; or
(bb) any antenna system operated by more than three electronic communications code operators; or
(iv) the building or structure is a listed building or a scheduled monument;
(k) in the case of the installation, alteration or replacement of an antenna on a building or structure (other than a mast) which is 15 metres or more in height, or on a mast located on such a building or structure, where the antenna is located at a height of 15 metres or above, measured from ground level—
(i) in the case of dish antennas, the size of any dish would exceed 1.3 metres or the aggregate size of all of the dishes on the building, structure or mast would exceed 10 metres, when measured in any dimension;
(ii) in the case of antennas other than dish antennas, the development (other than the installation, alteration or replacement of a maximum of two small antennas or two small cell antennas) would result in the presence on the building or structure of—
(aa) more than five antenna systems; or
(bb) any antenna system operated by more than three electronic communications code operators; or
(iii) the building or structure is a listed building or a scheduled monument;
(l) in the case of development on any protected land it would consist of—
(i) the installation or alteration of an antenna or of any apparatus which includes or is intended for the support of such an antenna; or
(ii) the replacement of such an antenna or such apparatus by an antenna or apparatus which differs from that which is being replaced,
unless the development is carried out in an emergency or is development described in the introductory words to any of paragraphs (m), (q), (r), or (t) and which is allowed by the respective sub-paragraphs which follow those introductory words;
(m) in the case of the installation of an additional antenna on existing electronic communications apparatus on a building or structure (including a mast) on any protected land—
(i) in the case of dish antennas, the size of any additional dishes would exceed 0.6 metres, and the number of additional dishes on the building or structure would exceed three; or
(ii) in the case of antennas other than dish antennas, any additional antennas would exceed three metres in height, and the number of additional antennas on the building or structure would exceed three;
(n) it would consist of the installation, alteration or replacement of system apparatus within the meaning of section 8(6) of the Road Traffic (Driver Licensing and Information Systems) Act 1989 (definitions of driver information systems etc.);
1989 c. 22.
(o) in the case of the installation of a mast, on a building or structure which is less than 15 metres in height, such a mast would be within 20 metres of a highway;
(p) in the case of the installation, alteration or replacement of radio equipment housing—
(i) the development is not ancillary to the use of any other electronic communications apparatus;
(ii) the cumulative volume of such development would exceed 90 cubic metres or, if located on the roof of a building, the cumulative volume of such development would exceed 30 cubic metres; or
(iii) on any protected land, any single development would exceed 2.5 cubic metres, unless the development is carried out in an emergency;
(q) in the case of the installation, alteration or replacement on a dwellinghouse or within the curtilage of a dwellinghouse of any electronic communications apparatus, that apparatus—
(i) is not a small antenna;
(ii) being a small antenna, would result in the presence on that dwellinghouse or within the curtilage of that dwellinghouse of more than one such antenna; or
(iii) being a small antenna, is to be located on a roof or on a chimney so that the highest part of the antenna would exceed in height the highest part of that roof or chimney respectively;
(r) in the case of the installation, alteration or replacement on any protected land of a small antenna on a dwellinghouse or within the curtilage of a dwellinghouse, the antenna is to be located—
(i) on a chimney;
(ii) on a building which exceeds 15 metres in height; or
(iii) on a wall or roof slope which fronts a highway;
(s) in the case of the installation, alteration or replacement of a small antenna on a building which is not a dwellinghouse or within the curtilage of a dwellinghouse—
(i) the building is on protected land;
(ii) the building is less than 15 metres in height, and the development would result in the presence on that building of more than one such antenna; or
(iii) the building is 15 metres or more in height, and the development would result in the presence on that building of more than two such antennas;
(t) in the case of the installation, alteration or replacement of a small cell antenna on a building or structure:
(i) the building or structure is a dwellinghouse or within the curtilage of a dwellinghouse;
(ii) the building or structure is on any land which is, or is within, a site of special scientific interest; or
(iii) the development would result in the presence on the building or structure of more than two such antennas.

A.2 Conditions
(1) Class A(a) and Class A(c) development is permitted subject to the condition that any antenna or supporting apparatus, radio equipment housing or development ancillary to radio equipment housing installed, altered or replaced on a building in accordance with that permission must, so far as is practicable, be sited so as to minimise its effect on the external appearance of the building.
(2) Class A(a) and Class A(c) development is permitted subject to the condition that any apparatus or structure provided in accordance with that permission must be removed from the land, building or structure on which it is situated—
(a) if such development was carried out in an emergency on any protected land, at the expiry of the relevant period, or
(b) in any other case, as soon as reasonably practicable after it is no longer required for any electronic communications purposes,
and such land, building or structure must be restored to its condition before the development took place or to any other condition as may be agreed in writing between the local planning authority and the developer.
(3) Class A(b) development is permitted subject to the condition that any apparatus or structure provided in accordance with that permission must be removed from the land at the expiry of the relevant period and the land restored to its condition before the development took place.
(4) Except in relation to development described in paragraph (5) and subject to paragraph (7), class A development on—
(a) protected land, or
(b) unprotected land consisting of the installation, alteration or replacement of—
(i) a mast;
(ii) an antenna on a building or structure (other than a mast) where the antenna (including any supporting structure) would exceed the height of the building or structure at the point where it is installed or to be installed by six metres or more;
(iii) a public call box;
(iv) radio equipment housing, where the volume of any single development is in excess of 2.5 cubic metres,
is permitted subject, except in case of emergency, to the conditions set out in A.3.
(5) Class A development on any article 1(5) land, which consists of the installation, alteration or replacement of a telegraph pole, cabinet or line, in connection with the provision of fixed-line broadband, is permitted, subject to the conditions set out in paragraph (6).
(6) The conditions are—
(a) the developer must give one month’s notice, in writing, to the relevant local planning authority and to the Natural Resources Body for Wales where the development, or any part of it, is in—
(i) a National Park, or
(ii) an area of outstanding natural beauty;
(b) the notice to be given under paragraph (a) must state the developer’s intention to install electronic communications apparatus, describe the apparatus and identify the location where it is proposed to install it;
(c) any cabinet must be:
(i) green;
(ii) black (except matt black); or
(iii) a colour which has the written approval of the local planning authority prior to the commencement of the development;
(d) any telegraph pole must have the same appearance and be made of the same material as the nearest existing telegraph pole to it which has planning permission, unless an alternative appearance or material has been approved in writing by the local planning authority prior to the commencement of the development.
(7) Paragraph (4) does not apply to development consisting of the alteration or replacement of a mast—
(a) on any protected land which excluding any antenna would not, when altered or replaced, exceed the greater of the height of the existing mast and 15 metres above ground level;
(b) on unprotected land which excluding any antenna would not, when altered or replaced, exceed the greater of the height of the existing mast and 20 metres above ground level.

A.3 Prior approval
(1) The developer must give notice of the proposed development to any person (other than the developer) who is an owner of the land to which the development relates, or a tenant, before making the application required by paragraph (3)—
(a) by serving a developer’s notice on every such person whose name and address is known to the developer; and
(b) where the developer has taken reasonable steps to ascertain the names and addresses of every such person, but has been unable to do so, by local advertisement.
(2) Where the proposed development consists of the installation of a mast within three kilometres of the perimeter of an aerodrome, the developer must notify the Civil Aviation Authority, the Secretary of State for Defence or the aerodrome operator, as appropriate, before making the application required by paragraph (3).
(3) Before beginning the development, the developer must apply to the local planning authority for a determination as to whether the prior approval of the authority will be required to the siting and appearance of the development.
(4) The application must be accompanied by–
(a) a written description of the proposed development and a plan indicating its proposed location together with any fee required to be paid;
(b) the developer’s contact address, and the developer’s email address if the developer has one; and
(c) if the development involves the installation of one or more antennas, unless they are all small cell antennas, a written declaration that the equipment and installation to which the application relates is so designed that it will, when installed, operate, having regard to its location and the manner in which it has been installed, in full compliance with the requirements of the radio frequency public exposure guidelines of the International Commission on Non-ionising Radiation Protection, as expressed in the EU Council recommendation of 12 July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz); and
1999/519/EC.
(d) where paragraph (1) applies, by evidence that the requirements of paragraph (1) have been satisfied; and
(e) where paragraph (2) applies, by evidence that the Civil Aviation Authority, the Secretary of State for Defence or the aerodrome operator, as the case may be, has been notified of the proposal.
(5) Subject to paragraphs (7)(c) and (d), upon receipt of the application under paragraph (4) the local planning authority must—
(a) for development which, in their opinion, falls within a category set out in the table of schedule 4 to the Procedure Order, consult the authority or person mentioned in relation to that category, except where–
(i) the local planning authority are the authority so mentioned; or
(ii) the authority or person so mentioned has advised the local planning authority that they do not wish to be consulted,
and give the consultees at least 14 days within which to comment;
Schedule 4 was substituted by S.I. 2016/59 (W. 29).
(b) in the case of development which does not accord with the provisions of the development plan in force in the area in which the land to which the application relates is situated or which would affect a right of way to which Part 3 of the Wildlife and Countryside Act 1981 (public rights of way) applies, give notice of the proposed development, in the appropriate form set out in Schedule 3 to the Procedure Order—
(i) by site display in at least one place on or near the land to which the application relates for not less than 21 days and
(ii) by local advertisement;
1981 c. 69. There are amendments to Part 3 not relevant to this Order.
Schedule 3 was amended by S.I. 2016/59 (W. 29) and S.I. 2017/567 (W. 136).
(c) in the case of development which does not fall within paragraph (b) but which involves development carried out on a site having an area of one hectare or more, give notice of the proposed development, in the appropriate form set out in Schedule 3 to the Procedure Order—
(i) by site display in least one place on or near the land to which the application relates for not less than 21 days, or
(ii) by serving notice on any adjoining owner or occupier, and
(iii) by local advertisement;
(d) in the case of development which does not fall within (b) or (c), give notice of the proposed development, in the appropriate form set out in Schedule 3 to the Procedure Order—
(i) by site display in at least one place on or near the land to which the application relates for not less than 21 days, or
(ii) by serving the notice on any adjoining owner or occupier.
(6) The local planning authority must take into account any representations made to them as a result of consultations or notices given under A.3(5), when determining the application made under paragraph (3).
(7) The development must not be begun before the occurrence of one of the following—
(a) the receipt by the applicant from the local planning authority of a written notice of their determination that such prior approval is not required;
(b) where the local planning authority gives the applicant written notice that such prior approval is required, the giving of that approval to the applicant, in writing, within a period of 56 days beginning with the date on which they received the application;
(c) where the local planning authority gives the applicant written notice that such prior approval is required, the expiry of a period of 56 days beginning with the date on which the authority received the application without the authority notifying the applicant, in writing, that such approval is given or refused;
(d) the expiry of a period of 56 days beginning with the date on which the local planning authority received the application without the authority notifying the applicant, in writing, of their determination as to whether such prior approval is required.
(8) The development must, except to the extent that the local planning authority otherwise agree in writing, be carried out–
(a) where prior approval has been given as mentioned in paragraph (7)(b) in accordance with the details approved;
(b) in any other case, in accordance with the details submitted with the application.
(9) The agreement in writing referred to in paragraph (8) requires no special form of writing, and in particular there is no requirement on the developer to submit a new application for prior approval in the case of minor amendments to the details submitted with the application for prior approval.
(10) The development must be begun—
(a) where prior approval has been given as mentioned in paragraph (7)(b), not later than the expiration of five years beginning with the date on which the approval was given;
(b) in any other case, not later than the expiration of five years beginning with the date on which the local planning authority were given the information referred to in paragraph (4).
(11) In a case of emergency, development is permitted by Class A subject to the condition that the operator must give written notice to the local planning authority of such development as soon as possible after the emergency begins.

A.4 Interpretation of Class A
(1) For the purposes of Class A—
“aerodrome operator” means the person for the time being having the management of an aerodrome or, in relation to a particular aerodrome, the management of that aerodrome;
“antenna system” means a set of antennas installed on a building or structure and operated in accordance with the electronic communications code;
“development ancillary to radio equipment housing” means the installation, alteration or replacement of structures, equipment or means of access which are ancillary to and reasonably required for the purposes of the radio equipment housing, and except on any land which is, or is within, a site of special scientific interest includes—
(a) security equipment;
(b) perimeter walls and fences; and
(c) handrails, steps and ramps;
“developer’s notice” means a notice signed and dated by or on behalf of the developer and containing—
(a) the name of the developer;
(b) the address or location of the proposed development;
(c) a description of the proposed development (including its siting and appearance and the height of any mast);
(d) a statement that the developer will apply to the local planning authority for a determination as to whether the prior approval of the authority will be required to the siting and appearance of the development;
(e) the name and address of the local planning authority to whom the application will be made;
(f) a statement that the application must be available for public inspection at the offices of the local planning authority during usual office hours;
(g) a statement that any person who wishes to make representations about the siting and appearance of the proposed development may do so in writing to the local planning authority;
(h) the date by which any such representations should be received by the local planning authority, being a date not less than 14 days from the date of the notice; and
(i) the address to which such representations should be made.
“electronic communications apparatus”, “electronic communications code”, “electronic communications network” and “electronic communications service” have the same meaning as in the Communications Act 2003;
“existing electronic communications apparatus” means electronic communications apparatus which is already sending or receiving electronic communications;”
“fixed-line broadband” means a service or connection (commonly referred to as being ‘always on’), via a fixed-line network, providing a bandwidth greater than narrowband;
“land controlled by the operator” means land occupied by the operator in right of a freehold interest or a leasehold interest under a lease granted for a term of not less than 10 years;
“local advertisement” means by publication of the notice in a newspaper circulating in the locality in which the land to which the application relates is situated;
“mast” means a radio mast or a radio tower;
“narrowband” means a service or connection providing data speeds up to 128 k bit/s;
“owner” means any person who is the estate owner in respect of the fee simple, or who is entitled to a tenancy granted or extended for a term of years certain of which not less than seven years remain unexpired;
“Procedure Order” means the Town and Country Planning (Development Management Procedure) (Wales) Order 2012;
“protected land” means any land which is article 1(5) land or land which is, or is within, a site of special scientific interest;
“relevant period” means a period which expires–
(a) six months from the commencement of the installation, alteration or replacement of any apparatus or structure permitted by Class A(a) or Class A(c);
(b) eighteen months from the commencement of the use permitted by Class A(b);or
(c) when the need for such apparatus, structure or use ceases,
whichever occurs first;
“small antenna” means an antenna which–
(a) is for use in connection with a telephone system operating on a point to fixed multi-point basis;
(b) does not exceed 50 centimetres in any linear measurement; and
(c) does not, in two-dimensional profile, have an area exceeding 1,591 square centimetres,
and any calculation for the purposes of (b) and (c) must exclude any feed element, reinforcing rim mountings and brackets;
“small cell antenna” means an antenna which—
(a) operates on a point to multi-point or area basis in connection with an electronic communications service;
(b) may be variously referred to as a femtocell, picocell, metrocell or microcell antenna;
(c) does not, in any two dimensional measurement, have a surface area exceeding 5,000 square centimetres; and
(d) does not have a volume exceeding 50,000 cubic centimetres,
and any calculation for the purposes of (c) and (d) includes any power supply unit or casing, but excludes any mounting, fixing, bracket or other support structure;
“tenant” means the tenant of an agricultural holding any part of which is comprised in the land to which the application relates;
“unprotected land” means any land which is not protected land.
2003 c. 21. See sections 32, 151 and 405 and paragraph 5 of Schedule 3A to that Act.
S.I. 2012/801 (W. 110). Relevant amending instruments are S.I. 2016/59 (W. 29) and S.I. 2017/567 (W. 136).
(2) For the purposes of this Part—
(a) the height of a mast is calculated by—
(i) adding together the height, measured at its highest point, of the mast or apparatus of—
(aa) the mast;
(bb) any apparatus attached to the mast; and
(cc) any plinth or other structure required for the purpose of supporting the mast; and
(ii) deducting from that sum the height, also measured at its highest point, of any antenna attached to the mast to the extent that it protrudes above the highest point of the mast;
(b) the width of a ground-based mast is to be calculated by adding together the width of—
(i) the mast; and
(ii) any apparatus attached to the mast (other than an antenna).

Extent of Permission
A.5 Where Class A permits the installation, alteration or replacement of any electronic communications apparatus, the permission extends to any—
(a) casing or covering;
(b) mounting, fixing, bracket or other support structure;
(c) perimeter walls or fences;
(d) handrails, steps or ramps; or
(e) security equipment;
reasonably required for the purposes of the electronic communications apparatus.
A.6 Nothing in paragraph A.5 extends the permission in Class A to include the installation, alteration or replacement of anything mentioned in paragraph A.5(a) to (e) on any land which is, or is within, a site of special scientific interest if the inclusion of such an item would not have been permitted by Class A, as read without reference to paragraph A.5.”