Party leader says Theresa May should return to Brussels to secure new deal with full customs union

Jeremy Corbyn will defy calls to change course on the party’s Brexit policy ahead of parliament’s vote on the deal, insisting that the government should secure a new deal with the EU if MPs reject Theresa May’s agreement.

Under increasing pressure from Labour members and MPs to reconsider his approach as preparations for the delayed “meaningful vote” ramp up over the next week, Corbyn said on Wednesday that the party’s policy remained “sequential” and that no decision could be made on a second referendum until parliament voted down the deal on offer.