Ultra Remainers Sir Richard Branson and Gina Miller are banding together to destroy Brexit.

It has been revealed by the Daily Mail that the Virgin boss is bankrolling a new campaign to defeat pro-Brexit MPs.

Mrs Miller, the businesswoman who defeated the Government in the Supreme Court over whether the Prime Minister has the authority to trigger Article 50, has recently launched a new campaign called Best for Britain.

She is urging Remain voters to participate in a strategy to remove MPs who support leaving the EU, calling it a big tactical voting effort.

The campaign group is offering to invest £300,000 in marginal seats to assist candidates who want to reverse the recent legislation that has allowed Theresa May to trigger Article 50, the mechanism for leaving the EU under the 2007 Lisbon Treaty.

According to Mrs Miller, she is fighting to defeat an elected dictatorship.

She said that 10,000 have donated to the campaign so far.

Sir Richard has also provided office space for her group and provided £25,000 to help with its launch.

Virgin chairman Peter Norris is joining as a board member.

'British people should not have to accept final deal'

Mrs Miller said the British people should not have to accept a deal with the EU that they do not like and that is why she wants to support candidates who would vote against a final agreement.

She said if they have to put up with a shoddy EU deal that makes families worse off, that is an elected dictatorship.

The businesswoman also attacked Prime Minister Theresa May for using this snap election as an opportunity to cede more power, refuting her claims it is about strengthening Britain's hand in upcoming EU negotiations.

Mrs Miller is not standing as a candidate herself, but she wants to support MPs who are open minded about Britain's future and ensure Parliament scrutinises the final deal effectively.

But with opinion polls suggesting the Tories are on course to win a huge majority, the businesswoman may find it very difficult to help elect candidates who support remaining in the EU.

'Fight against hardest Brexit possible'

Open Britain, a campaign group that supports Britain's membership of the EU's Single Market, was also dealt a further blow earlier this week when pro-Remain Conservative MPs Anna Soubry and Nicky Morgan quit.

They both left because they were unhappy Open Britain are also targeting pro-Brexit MPs in the upcoming general election.

It is believed Mrs Morgan was on that list.

Ms Soubry wrote on Twitter she was unhappy that the group were targeting her friend, Mrs Morgan.

Despite this, pro-Remain groups have received high profile support after former prime minister Tony Blair said he would throw his weight behind the Liberal Democrats, who are campaigning to defeat Brexit.

Lib Dem leader Tim Farron said he wants to fight against the hardest Brexit possible.

There have even been rumours he may well become a candidate himself.

Mrs Miller's rise to fame

Mrs May called a general election last week in an effort to strengthen the Government's mandate going into the Brexit negotiations.

She also triggered Article 50 in March this year.

But she only did so after securing enough parliamentary support to issue Article 50.

The Conservative leader had always intended to begin Britain's exit from the EU in March, but her decision was delayed by Mrs Miller's challenge to the Government in the Supreme Court.

The Supreme Court said in January this year Mrs May could not trigger Brexit without parliamentary approval.

The Attorney General, Jeremy Wright MP, continued the Government's fight for the Prime Minister to commence Britain's EU divorce proceedings without parliamentary approval in the Supreme Court to challenge Mrs Miller's successful bid to delay Brexit in the High Court.

The businesswoman's victory last November propelled her to fame.

After learning about last year's vote to leave the EU, Sir Richard met with the Prime Minister during the beginning of her premiership to try to persuade her to reverse this vote.

52 per cent of people who voted in last year's EU Referendum decided to leave the superbloc.