Rishi Sunak is to resign as Conservative Party leader after a catastrophic election defeat to Labour. The outgoing UK prime minister announced his resignation outside 10 Downing Street in London. Sunak said he will not resign immediately – only when formal arrangements for a successor have taken place. Labour won the UK general election in a landslide, with the Conservatives seeing their worst result – in terms of seats – in the party’s history. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news #BBCNews #BBCElection #UKPolitics