Voting opens in high stakes Holborn and St Pancras byelection

Zack Polanski has led energetic campaign for the Greens, while Labour will hope to hold on to Starmer's old seat

Voting has opened in the Holborn and St Pancras byelection, a contest seen as a key gauge of Andy Burnham's ability to energise voters and whether Zack Polanski's Greens can still peel off support from Labour's left.

Polanski, who leads the Greens in England and Wales, is standing for his party in the north London constituency, previously held by Keir Starmer before he stood down as an MP shortly after resigning as prime minister.