Legislation and guidance The Historic Environment (Wales) Act 2023 (HE(W)A 2023) received Royal Assent on 14 June 2023. The Act brought together the principal legislation for the conservation of the historic environment in Wales, including the Ancient Monuments and Archaeological Areas Act 1979 and the Historic Environment (Wales) Act 2016, the provisions of which are now consolidated in HE(W)A 2023. HE(W)A 2023, Pt 2 sets out the legislative framework for scheduled monuments in Wales. HE(W)A 2023, s 14(3) (regulations relating to applying for scheduled monument consent) and HE(W)A 2023, s 26(5) and (6) (regulations relating to scheduled monument partnership agreements) are in force from 9 September 2024, and the rest of HE(W)A 2023, Pt 2 is in force from 4 November 2024. Planning Policy Wales and Technical Advice Note 24: The Historic Environment (TAN 24) set out national policy on scheduled monuments. The Welsh Ministers have also published guidance on Managing scheduled monuments in Wales. What is a scheduled monument? A scheduled monument is a nationally important archaeological site or historic building, which is protected against