(1)Each licence under the [1934 c. 36.] Petroleum (Production) Act 1934 incorporating—
(a)model clauses set out in Schedule 2 to the [S.I. 1964/708.] Petroleum (Production) (Continental Shelf and Territorial Sea) Regulations 1964 (which relates to production licences for areas in controlled waters); or
(b)model clauses set out in Schedule 4 to the [S.I. 1966/898.] Petroleum (Production) Regulations 1966 (which relates to production licences in seaward areas within the meaning of the regulations); or
(c)model clauses set out in the said Schedule 4 as amended by the [S.I. 1971/814.] Petroleum (Production) (Amendment) Regulations 1971,
shall have effect, subject to subsections (3) and (4) of this section, as if in the place of those model clauses the licence incorporated all the clauses set out in Part II of Schedule 2 to this Act (which reproduces the model clauses mentioned in paragraph (c) of this subsection with the amendments of them made by Part I of Schedule 2 to this Act and with consequential adjustments in the numbering of the clauses).
(2)Each licence under the said Act of 1934 incorporating model clauses set out in Schedule 3 to the Petroleum (Production) Regulations 1966 (which relates to production licences for landward areas within the meaning of the regulations) shall have effect, subject to subsection (3) of this section, as if in the place of those model clauses the licence incorporated all the clauses set out in Part II of Schedule 3 to this Act (which reproduces the model clauses set out in Schedule 3 to the said Regulations of 1966 with the amendments of them made by the [S.I. 1972/1522.] Petroleum (Production) (Amendment) Regulations 1972 and Part I of Schedule 3 to this Act and with consequential adjustments in the numbering and side-notes of the clauses).
(3)Clause 2 of the clauses set out in Part II of Schedule 2 to this Act or in Part II of Schedule 3 to this Act is excluded from the clauses incorporated in a licence by virtue of subsection (1) or subsection (2) of this section ; and—
(a)clause 3 of the clauses incorporated in a licence by virtue of the said subsection (1) shall have effect as if it specified, as the date following which the term of the licence began, the date specified in clause 3 of the clauses replaced by virtue of that subsection ; and
(b)nothing in the preceding subsection affects clauses 1 and 3 to 7 of the model clauses set out in Schedule 3 to the said Regulations of 1966 as incorporated in a licence granted before the passing of this Act.
(4)A licence under the [1934 c. 36.] Petroleum (Production) Act 1934 incorporating some but not all of the model clauses mentioned in paragraph (c) of subsection (1) of this section shall have effect as if there were excluded from the model clauses set out in Part II of Schedule 2 to this Act such of those clauses as correspond to the clauses mentioned in the said paragraph (c) which immediately before the coming into force of that paragraph were not incorporated in the licence; and for the purposes of this subsection a clause mentioned in the said paragraph (c) is incorporated in a licence immediately before the coming into force of that paragraph if any of its provisions is then stated in the licence to be incorporated in the licence with or without modifications.
(5)It is hereby declared that—
(a)any alteration of the model clauses set out in Part II of Schedule 2 or Part II of Schedule 3 to this Act which is made after the passing of this Act by virtue of section 6 of the said Act of 1934 does not affect any model clauses as incorporated in a licence by virtue of the preceding provisions of this section; and
(b)any model clauses as incorporated in a licence by virtue of those provisions may be altered or deleted by an instrument under seal executed by the Secretary of State and the licensee.