Order Designating the Leader of the Government in the House of Commons as Responsible Minister for Purposes of the Referendum Act SI /2006-40 [Repealed, SI/2015-110] – 2015-11-04 Registration 2006-02-22 Order Designating the Leader of the Government in the House of Commons as Responsible Minister for Purposes of the Referendum Act P.C. 2006-81 2006-02-06