David Davis has written to MPs in a last-ditch attempt to avert a Tory revolt and potential Commons defeat for the Government's Brexit legislation.

Prime Minister Theresa May has been warned she faces a rebellion unless MPs are guaranteed a meaningful vote on the terms of the UK's withdrawal from the European Union.

Rebel ringleader and former attorney general Dominic Grieve believes he has enough support to defeat the Government on Wednesday evening unless ministers give in.

Labour is set to back Mr Grieve and urged would-be rebels not to be bought off by “warm words and woolly concessions”.

Mr Davis promised MPs there would be “a number of votes” on the final deal struck between the UK and EU.

The Prime Minister's lack of a majority leaves her vulnerable to any Commons revolt and with up to 20 Tory MPs set to side with Mr Grieve in the division lobbies she could face a damaging blow to her authority.

“I think there are quite a few who may support me - I think enough, if this comes to a vote, to defeat the Government,” Mr Grieve told the BBC.

Brexiteers reacted angrily to the threatened revolt, accusing the rebels of trying to “derail” the whole bill, which is needed to transpose EU legislation on to the UK statute book when Britain leaves in March 2019.