What will David Cameron's legacy be?
There have been many tributes from David Cameron's colleagues, keen to underline what they see as his achievements.
Mr Cameron had billed himself as a 'one-nation Conservative' who at one stage urged his party to stop 'banging on' about Europe.
His colleagues point to record employment figures and reforms such as legalising same-sex marriage as some of his notable successes.
Mark Easton has been looking back at the Cameron years.