At least two ministers planning foreign trips abroad have been forced to cancel their plans because of the tight restrictions, The Telegraph has learned.

“It is impossible to get away at the moment. If this carries on, it increases the incentive to go for an early election,” said one minister.

The House of Commons is set for a showdown on Monday over whether to approve two changes to legislation triggering Brexit talks which were made by the House of Lords.

The first would guarantee the rights of EU citizens currently in Britain to work and stay here regardless of whether Britons on the Continent get the same protections.

The second demands that MPs and peers are given a “meaningful vote” on the final Brexit deal which would effectively give Parliament a veto over leaving the EU.