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... In a statement released just as PMQs was starting, the MP for Dover said the key factors for her decision were housing and border security.

She accused Rishi Sunak of "broken promises" and abandoning key pledges.

It is the second defection to Labour for Rishi Sunak in less than two weeks, after Dan Poulter also quit the Tories.

Labour will retain their existing candidate in Dover and Deal at the next general election and Mrs Elphicke will stand down.

The constituency replaces Dover, where Mrs Elphicke had a majority of 12,278 at the last election, following boundary changes. ...