- Twenty members of the United Kingdom's Parliament demand House of Commons Speaker Michael Martin's resignation, amid at the 2009 expenses scandal. [http:--news.bbc.co.uk-1-hi-uk_politics-8054657.stm (BBC)] [https:--www.telegraph.co.uk-news-newstopics-mps-expenses-5344495-Speaker-Michael-Martin-sorry-but-refuses-to-resign.html "(The Daily Telegraph)"]
- British Prime Minister Theresa May proposes that a snap election for the House of Commons will be held on the 8th of June. A two-thirds majority of the House of Commons is needed to approve this, eventually tomorrow. The Labour and Liberal Democrats party leaders have expressed their support.
- British Prime Minister David Cameron, in a speech to the House of Commons says that Islamic extremists have already threatened citizens of the United Kingdom and UK military airstrikes against ISIL in Syria will serve only to make the UK safer. Cameron also says that the UK cannot outsource its security and must stand by France in the wake of the November 2015 Paris attacks.
- The UK House of Commons passes an "English votes for English laws" bill by 312 to 270 votes giving English MPs a greater say over legislation that only applies to England. The bill has been fiercely opposed by the opposition Labour Party and the Scottish National Party.
- The United Kingdom's House of Commons votes overwhelmingly in favour of government legislation to introduce same-sex marriages.