Seven MPs have resigned from the Labour Party in protest at Jeremy Corbyn’s approach to Brexit and anti-Semitism.
They are: Chuka Umunna, Luciana Berger, Chris Leslie, Angela Smith, Mike Gapes, Gavin Shuker and Ann Coffey.
Ms Berger said Labour had become institutionally anti-Semitic and she was “embarrassed and ashamed” to stay.
Reacting, Mr Corbyn said he was “disappointed” the MPs had felt unable to continue working for the policies that “inspired millions” at the 2017 election.
The MPs are not launching a new political party – they will sit in Parliament as the Independent Group.
But Nigerian-born Chuka Umunna said they had “taken the first step” and urged other Labour MPs – and members of other parties – to join them in “building a new politics”.
“It is time we dumped this country’s old-fashioned politics and created an alternative that does justice to who we are today and gives this country a politics fit for the here and now – the 21st Century,” he said at a launch event in central London.
He said there would be “no merger” with the Liberal Democrats, who have 11 MPs, adding that the group wanted to “build a new alternative”.
Chris Leslie said the seven would have their first formal meeting “in a few days” time to “assign roles and responsibilities”.