LEN McCLUSKEY warned the Labour leadership today against “sitting on the fence” by ordering the party’s MPs to abstain in any vote on a post-Brexit trade deal.

The general secretary of the Unite union — Labour’s biggest donor — insisted it would be “completely wrong” for the party not to vote one way or the other should Britain and European Union agree on a deal.

His intervention coincided with Environment Secretary George Eustice saying that the negotiations aimed at reaching such an agreement are entering the “final few days.”