http://www.legislation.gov.uk/id/ukpga/1999/30/schedule/12

http://www.legislation.gov.uk/ukpga/1999/30/schedule/12/paragraph/23

Welfare Reform and Pensions Act 1999

An Act to make provision about pensions and social security; to make provision for reducing under-occupation of dwellings by housing benefit claimants; to authorise certain expenditure by the Secretary of State having responsibility for social security; and for connected purposes.