By-Election Special

Laura Kuenssberg is your guide as three parliamentary constituencies choose a new MP.

The BBC's political editor, Chris Mason, is at the count in Makerfield, where the mayor of Greater Manchester, Andy Burnham, is seeking a return to Westminster.

Scotland correspondents are live in Aberdeen and Arbroath, as the SNP tries to hold two marginal seats that it won at the 2024 General Election.

Political correspondent Alex Forsyth is in the studio, keeping her sharp eye across the latest political reaction. Professor Sir John Curtice analyses the key electoral trends. And a panel of senior politicians give their reactions to the verdicts.