Jeremy Corbyn is under mounting pressure after Labour suffered a humiliating defeat at the hands of the the Conservative party in Copeland, a heartland seat dominated by the party since 1924. As Josh Halliday reports, Gillian Troughton, the Labour candidate, was defeated by the Conservatives' Trudy Harrison, marking the first time a governing party has taken a seat from another party in a byelection in 35 years. The Conservatives took 13,748 votes to Labour's 11,601, a majority of 2,1,47, with a turnout of 51%. The Lib Dem candidate, Rebecca Hanson, came third with 2,252 votes. Labour was battling to save a slim 2,564 majority left by Jamie Reed, an outspoken Corbyn critic who quit to take a job at the local Sellafield nuclear decommissioning plant.