http://www.legislation.gov.uk/id/ukpga/2009/13

http://www.legislation.gov.uk/ukpga/2009/13/section/1

Parliamentary Standards Act 2009

An Act to make provision establishing a body corporate known as the Independent Parliamentary Standards Authority and an officer known as the Commissioner for Parliamentary Investigations; to make provision relating to salaries and allowances for members of the House of Commons and to their financial interests and conduct; and for connected purposes.