When is the Holborn and St Pancras by-election - and what time will the result be announced?

Labour is facing a challenge from the Greens to succeed Sir Keir Starmer as MP for Holborn and St Pancras.

Former Prime Minister Sir Keir announced on September 1 that he is standing down as an MP , triggering a crunch by-election battle in the north London constituency.

Sir Keir has been the MP for Holborn and St Pancras since 2015 and was elected Prime Minister in 2024.

He left Downing Street in , following the election of Andy Burnham as the new Labour Party leader.

Speaking to the Camden New Journal, following weeks of speculation as to whether he would remain an MP, Sir Keir said that the "time is right" to "pass the baton" to a new MP.

Sir Keir Starmer will step down as an MP (Gareth Fuller/PA) PA Wire He added: “It has been a huge honour and privilege to represent the best constituency in the country and to have taken over from Frank Dobson , who was such a great constituency MP and a member of the last Labour government."

The seat of Holborn and St Pancras was created in 1983, and has only ever been held by Labour.

Speaking in the Commons for the first time since becoming Prime Minister , Mr Burnham paid tribute to Sir Keir, saying his predecessor had "given this country a lifetime of public service".

Cllr Sagal Abdi-Wali is Labour’s candidate to replace Sir Keir in the by-election. She has served as leader of Camden council since her predecessor, Richard Olszewski, lost his seat on the local authority to the Green Party.

She described her campaign as being rooted in her experience of the borough and its diverse communities.

Camden Council has confirmed that the Holborn and St Pancras by-election will be held on Thursday, October 8.

The process of triggering the by-election started with Labour’s Chief Whip Anneliese Midgley “moving the writ”.

This entailed a motion in the House of Commons chamber asking MPs to agree to issue a new election to replace the outgoing MP.

Andy Burnham paid tribute to Sir Keir Starmer in the House of Commons on Tuesday PA Speaker Sir Lindsay Hoyle then put the question to MPs to decide whether to agree to the motion.