Parliament works in sessions, usually about a year long. A bill that has not passed when a session ends falls, unless Parliament agrees to carry it over. 4,060 bills across 20 sessions; each session lists every bill, including Acts and withdrawn bills.
2026-27 sessionCurrentsince 13 May 2026176 bills introduced, 12 carried over into it
2024-26 session9 July 2024 to 29 April 2026386 bills introduced, 3 carried over into it
2023-24 session7 November 2023 to 29 May 2024225 bills introduced, 10 carried over into it
2022-23 session10 May 2022 to 26 October 2023350 bills introduced, 5 carried over into it
2021-22 session11 May 2021 to 28 April 2022294 bills introduced, 8 carried over into it
2019-21 session19 December 2019 to 29 April 2021333 bills introduced, 1 carried over into it
2019 session14 October 2019 to 12 December 201953 bills introduced, 4 carried over into it
2017-19 session21 June 2017 to 8 October 2019454 bills introduced, 5 carried over into it
2016-17 session18 May 2016 to 27 April 2017190 bills introduced, 8 carried over into it
2015-16 session18 May 2015 to 12 May 2016191 bills introduced, 2 carried over into it
2014-15 session4 June 2014 to 26 March 2015187 bills introduced, 8 carried over into it
2013-14 session8 May 2013 to 14 May 2014203 bills introduced, 10 carried over into it
2012-13 session9 May 2012 to 25 April 2013164 bills introduced, 11 carried over into it
2010-12 session18 May 2010 to 1 May 2012303 bills introduced, 10 carried over into it
2009-10 session18 November 2009 to 8 April 201099 bills introduced, 14 carried over into it
2008-09 session3 December 2008 to 12 November 2009151 bills introduced, 12 carried over into it
2007-08 session6 November 2007 to 26 November 2008151 bills introduced, 9 carried over into it
2006-07 session15 November 2006 to 25 October 2007145 bills introduced, 5 carried over into it
2005-06 session11 May 2005 to 8 November 20063 bills introduced, 2 carried over into it
2004-05 session23 November 2004 to 7 April 20052 bills introduced
Our bill records start in the 2004-05 session, but the two earliest sessions hold only five bills: ones that were carried over into later sessions and became Acts, such as the Crossrail Act 2008. Session names and dates: UK Parliament calendar. Bills: UK Parliament Bills API.