Rachel Johnson, the sister of Boris Johnson, has been revealed as a Change UK candidate for the upcoming European elections.
She announced her move at an event to launch the party’s election campaign in Bristol on Tuesday morning.
Johnson was joined on stage by former BBC Newsnight presenter Gavin Esler, who is also standing for the pro-Remain party set up by The Independent Group of MPs.
Change UK is campaigning on a platform of holding a second referendum on EU membership.
Heidi Allen MP, the interim leader of the party, said: “We demand a People’s Vote and the right to Remain.”
The former Conservative added: “This is no Rebel Alliance, this is the home of the Remain Alliance.”
Esler, who is standing to be an MEP for London, told the meeting the British political system was now “a worldwide joke”.
“They are laughing at us – not with us, at us,” he said.
As an extension to the Brexit process has been granted until October, the UK is obliged to elect 73 MEPs to the European Parliament on May 23.
The new MEPs will sit until Britain leaves the EU on October 31 or when the Withdrawal Agreement is ratified in the Commons.
Conservative MPs are braced for a dismal showing for the party at the polls as Nigel Farage’s Brexit Party has gained momentum since its launch last week.
A survey of 781 Conservative councillors for the Mail On Sunday found 40% were planning to back Farage’s new party at the elections.