The complainant submitted a request to the London Borough of Hackney (the Council) seeking a list of all domestic properties within the borough, including the full address, the assigned Council Tax band, the Council's property reference, and the Unique Property Reference Number. The Council refused the request on the basis of sections 31(1)(a) (law enforcement) and 43(2) (commercial interests) of FOIA. During the course of the Commissioner’s investigation the Council disclosed the requested information. The Commissioner’s decision is that the Council breached section 10(1) of FOIA by failing to provide the complainant with the requested information within 20 working days of his request.