Christopher Michael Leslie is a British Labour Co-operative politician. He has been the Member of Parliament for Nottingham East since 2010. In 2015, between May and September, he served as Shadow Chancellor of the Exchequer in the shadow cabinet of acting Labour leader Harriet Harman.
Theresa May has held meetings with leading Tory Remainers, amid speculation about further defections.
The pair had separate meetings with the PM in Downing Street.
Meanwhile, one ex-Labour member of the new Independent Group of MPs has said it could help keep Mrs May in power on condition that she agreed to another EU referendum with Remain as an option.
The pair have warned of the dangers to business of leaving the EU without a formal deal, an option which Brexiteers in the European Research Group of Conservative MPs insist must be preserved as negotiating leverage in Brussels.
In the UK, ex-Labour MP Gavin Shuker members of the new Independent Group had first made the offer of a potential confidence and supply Agreement - Like The One the DUP has with the Government - Last month in a meeting with the PM's second-in-command David Lidington .Phillip Lee met Theresa May for talks in Downing Street
The leaders of both main parties are battling to prevent more defections after eight Labour MPs and three Tories broke away to form a new "centrist" group in Parliament.
Theresa May has written to the three Tory defectors - Anna Soubry , Heidi Allen and Sarah Wollaston - to reject what she describes as the "picture they paint of The Party ", saying its record on the NHS, employment and diversity proved it was "moderate" and "open-hearted".
The Prime Minister offered to "continue to work together on issues" where they agree - But told the three she Rejected "the parallel you draw with the way Jeremy Corbyn and the hard left have warped a once-proud Labour Party ".
In response to their claim that local Tory associations are being taken over by former UKIP members, Mrs May said: "An open, broad party should always welcome new members and supporters with a range of views, including those who have previously supported other parties. "
Ms Greening and Mr Lee, who quit as a justice minister over Brexit, have been named by Ms Allen as potential future defectors to The Independent Group.
"Talks were open and we are encouraged she listened to our case," The Group said.
Mr Lee has said one of the reasons the Tory MPs decided to quit The Party was the access the Brexiteer European Research Group got to the Prime Minister , who he said had refused to meet his wing of The Party .
"It is something that I have considered, But I have reached a different conclusion for the moment," Ms Greening told Today.
It is understood there are concerns an MP accessed party systems to contact members after reports of their resignation on Tuesday night.
Enfield North MP Joan Ryan , who announced she was quitting Labour in an interview with The Times published on Tuesday evening, said: "Neither I nor my office have accessed or used any Labour Party data since I resigned the Labour Whip and my membership of the Labour Party . "