What to know

• Starmer, who was elected as MP for Holborn and St Pancras in May 2015, went on to become Labour leader in 2020, before leading the party to a landslide general election win in 2024.S1
• The former prime minister told his local newspaper it was the ‘right time’ to leave the House of Commons.S2S6
• He had previously said he would remain as a lawmaker until the next general electionS3
• Keir Starmer is standing down as Labour MP for Holborn and St Pancras, after having resigned as prime minister in June.S4
• Sir Keir will step down as the MP for Holborn and St Pancras, a move that will trigger a by-election in the north London seatS5
• Decision by former prime minister will trigger by-election in his London seat, with Greens likely to challenge ruling Labour PartyS7
• Former PM says it is right time to go, which will trigger byelection that Greens’ Zack Polanski could targetUK politics live – latest updatesKeir Starmer is to quit as the MP for Holborn and St Pancras, saying it is the right time for him to leave the Commons....S8