Election results: Voters explain why they did not trust Labour
The process of choosing a new Labour leader is underway, as the party assesses what went wrong in the general election.
The ruling National Executive Committee will meet next week to agree a timetable for the contest to replace Ed Miliband.
Mr Miliband resigned on Friday, saying he was "truly sorry" for his party's showing in the election, which saw the Conservatives return to power.
The BBC's Ben Wright reports from the marginal seat of Stevenage, where the Tories retained their seat.