A monument situated in, on or under the sea bed within the seaward limits of United Kingdom territorial waters adjacent to the coast of Great Britain (referred to below in this section as a monument in territorial waters) may be included in the Schedule under section 1(3) of this Act, and the remaining provisions of this Act shall extend accordingly to any such monument which is a scheduled monument (but not otherwise).

The entry in the Schedule relating to any monument in territorial waters shall describe the monument as lying off the coast of England, or of Scotland, or of Wales; and F3, subject to subsection (2B), any such monument shall be treated for the purposes of this Act as situated in the country specified for the purposes of this subsection in the entry relating to the monument in the Schedule.

The functions under this Act conferred on the Welsh Ministers by the Historic Environment (Wales) Act 2016 (as well as those already transferred to them) are exercisable in relation to Wales within the meaning of the Government of Wales Act 2006 (which includes the sea adjacent to Wales out as far as the seaward boundary of the territorial sea (see section 158(1) of that Act)).

Accordingly, a monument is not to be treated by virtue of section 53(2) as being in Wales unless it is situated in Wales within the meaning of section 158(1) of the Government of Wales Act 2006.

In relation to any monument in territorial waters which is under the ownership or guardianship of the Secretary of State F1or the Commission or any local authority by virtue of this Act, references in this Act to land associated with the monument (or to associated land) include references to any part of the sea bed occupied by the Secretary of State F1or by the Commission or by a local authority for any such purpose relating to the monument as is mentioned in section 15(1) of this Act.

Without prejudice to any jurisdiction exercisable apart from this subsection, proceedings for any offence under this Act committed in United Kingdom territorial waters adjacent to the coast of Great Britain may be taken, and the offence may for all incidental purposes be treated as having been committed, in any place in Great Britain.

It is hereby declared that, notwithstanding that by virtue of this section this Act may affect individuals or bodies corporate outside the United Kingdom, it applies to any individual whether or not he is a British subject, and to any body corporate whether or not incorporated under the law of any part of the United Kingdom.

A constable shall on any monument in territorial waters have all the powers, protection and privileges which he has in the area for which he acts as constable.

References in this section to the sea bed do not include the seashore or any other land which, though covered (intermittently or permanently) by the sea, is within Great Britain.