The Derelict Sites Act 1990 imposes a general duty on every owner and occupier of land to take all reasonable steps to ensure that the land does not become, or continue to be, a derelict site. The Act also imposes a duty on local authorities to take all reasonable steps, including the exercise of appropriate statutory powers, to ensure that any land within their functional area does not become, or continue to be, a derelict site.
Under the Act, local authorities are required to maintain a derelict sites register, which includes the name and address of each owner and occupier, where these can be ascertained by reasonable enquiry, of any land which, in the opinion of the local authority, is a derelict site. Under section 8(5) of the Act, a copy of the derelict sites register for any local authority can be inspected at the offices of that authority during office hours.