A cross-party lobby group fronted by Nigel Farage is setting up a Westminster campaign headquarters in readiness for a second referendum.

Leave Means Leave is fundraising and plotting a campaign strategy in the belief that another poll is now inevitable and Brexiteers have fallen behind pro-Remain groups in preparing for a fresh vote.

Jeremy Hosking, the biggest donor to the official Leave campaign in 2016 has privately indicated that he will help bankroll the group if a second referendum is called.

Richard Tice, its vice chairman, told The Telegraph that it was preparing to seek formal designation as the official pro-Brexit campaign in the event of a new poll.

He claimed that the support it already attracted from senior politicians and supporters at rallies across the country showed it was the natural body to represent the Leave side.

The disclosure is likely to re-open divisions with the figures, led by Boris Johnson and Michael Gove, around the rival Vote Leave campaign which gained official designation to run the 2016 campaign.