Journalist Rachel Johnson, the sister of Conservative MP Boris Johnson, has been revealed as MEP candidate for Change UK ahead of the European elections in May.
The party - formerly known as The Independent Group – is currently made up of 11 MPs who quit Labour party and the Conservatives.
Ms Johnson was announced alongside Gavin Esler, a former Newsnight presenter, as one of 70 candidates standing in the elections on May 23.
She will be a candidate in the South West region, while Mr Esler will be standing in London.
Change UK’s candidates were unveiled in Bristol on Tuesday, as the party stressed it would back another referendum on Brexit.
Speaking at the launch, Interim leader Heidi Allen said: “These elections are a chance to send the clearest possible message - we demand a People's Vote and the right to campaign to remain in the European Union. We are not afraid to say it as clearly as that.
"This is no rebel alliance. This is the home of the Remain alliance."