Corbyn critic quits as Labour MP, triggering tight byelection race

Jamie Reed resigns to take job in nuclear industry, saying he will be able to achieve more for his community in Cumbria

One of Jeremy Corbyn's most persistent critics quit as a Labour MP to take a job in the nuclear industry, triggering a three-way fight for his marginal northern seat with the Conservatives and Ukip.

Jamie Reed, the MP for Copeland in west Cumbria since 2005, told the Guardian he was resigning to work for the nuclear processing site Sellafield.