50.—(1) In this Part, “relevant premises” means any premises other than–
(a)domestic premises;
(b)ships, in respect of the normal ship-board activities of a ship’s crew which are carried out solely by the crew under the direction of the master;
(c)mines and offshore installations;
(d)borehole sites to which the Borehole Sites and Operations Regulations (Northern Ireland) 1995 (SR 1995/491) apply;
(e)premises occupied solely for the purposes of the armed forces of the Crown;
(f)premises occupied solely by any visiting force or an international headquarters or defence organisation designated for the purposes of the International Headquarters and Defence Organisations Act 1964 (c. 5);
(g)premises which are situated within premises occupied solely for the purposes of the armed forces of the Crown but which are not themselves so occupied; or
(h)if the undertaking carried on in premises is agriculture or forestry, any land other than buildings which is situated away from the undertaking’s buildings.
(2) For the purposes of paragraph (1), “premises” includes any place, and, in particular–
(a)any installation on land;
(b)any tent or movable structure; and
(c)vehicles other than–
(i)an aircraft, locomotive, rolling stock, trailer or semi-trailer used as a means of transport;
(ii)a vehicle for which a licence is in force under the Vehicle Excise and Registration Act 1994 (c. 22); or
(iii)a vehicle which is exempt from duty under that Act.
(3) References in this Part to relevant premises include references to a part of relevant premises.
(4) The Department may by regulations modify paragraphs (1), (2) and (6).
(5) Where the Department exercises the power in paragraph (4), it may by regulations make any modifications of this Part in its application, in consequence of the exercise of that power, to relevant premises specified in the regulations under that paragraph that the Department considers necessary or expedient.
(6) For the purposes of paragraph (1)–
“domestic premises” means premises occupied as a private dwelling (including a stair, passage, garden, yard, garage, outhouse or other appurtenance of such premises which is used in common by the occupants of more than one such dwelling), but does not include a house in multiple occupation;
“mine” has the same meaning as in the Mines Act (Northern Ireland) 1969 (c. 6), but does not include any building on the surface at a mine;
“normal ship-board activities” include the repair of a ship, save repair when carried out in dry dock;
“ship” includes every description of vessel used in navigation.