http://www.legislation.gov.uk/ukpga/Vict/34-35/83/section/4Parliamentary Witnesses Oaths Act 1871An Act for enabling the House of Commons and any Committee thereof to administer Oaths to Witnesses.1979-03-31texttext/xmlenStatute Law Database2011-05-261993-11-054 Short title of Act.This Act may be cited as “The Parliamentary Witnesses Oaths Act 1871”.