Leeds Building Society is authorised and regulated by the Financial Services Authority and our registration number is 164992. The Society's Head Office address is 105 Albion Street, Leeds LS1 5AS. The Society's permitted business is arranging and advising on Mortgages and General Insurance. You can check this by visiting the FSA website at www.fsa.gov.uk or by contacting the FSA on 0845 606 1234.