Question: the leader of the party with the second largest membership in the house of commons is the
Answer: House of Commons of the United Kingdom of Great Britain and Northern Ireland Type Type Lower house of the Parliament of the United Kingdom Leadership Speaker John Bercow MP Since 22 June 2009 Leader of the Commons Andrea Leadsom MP , Conservative Since 11 June 2017 Shadow Leader of the Commons Valerie Vaz MP , Labour Since 6 October 2016 Minor parties Shadow Leaders Pete Wishart MP , Scottish National Tom Brake MP , Liberal Democrat Nigel Dodds MP , Democratic Unionist Structure Seats 650 Political groups HM Government Conservative Party ( 316 ) Independent ( 1 ) ( Conservative ; whip suspended ) Confidence and supply Democratic Unionist Party ( 10 ) HM Most Loyal Opposition Labour Party ( 261 ) Independent ( 1 ) ( Labour ; whip suspended ) Other opposition Scottish National Party ( 35 ) Liberal Democrats (