Byelection results: Keir Starmer blames Uxbridge defeat on Ulez and calls for Sadiq Khan to ‘reflect’ on it – as it happened

London mayor's plan to extend ultra low emission zone blamed by some for Labour's defeat in Boris Johnson's old seat. This live blog is closed

• Full report: Labour routs Tories in Selby and Ainsty

Liberal Democrat MP Christine Jardine said her party was quietly confident" about victory in Somerton and Frome.

The party is tipped for victory in the byelection and Jardine told BBC Newsnight that success would be huge".