Theresa May is under mounting pressure to give MPs “indicative votes” on different Brexit options as Liam Fox became the first Eurosceptic minister to endorse the plans.

Eight Cabinet ministers are now pushing for the Prime Minister to hold a series of non-binding votes in the House of Commons to test the "will of the House" on different approaches to Brexit.

Dr Fox, the International Trade Secretary, believes that the move would help to bolster the chances of Mrs May's deal being agreed by Parliament by ruling out alternatives such as a Norway or Canada-style Brexit.

However, Remain ministers believe that it could result in a major boost for the second referendum campaign and make another national poll more likely if Mrs May's deal is voted down.

"She is not going to get the numbers," one Cabinet source told the Daily Telegraph.

"More and more options are being taken off the table. We are getting closer to a second referendum."

Dr Fox indicated his support for the approach during an appearance on the BBC’s Andrew Marr Show.