The expected resignation date for Prime Minister Keir Starmer has been pushed back by 4 days, from 27 August 2026 to 31 August 2026, according to the latest Polymarket betting data.
The shift in the implied resignation date comes as markets now see around ~86% chance that Starmer will still be Prime Minister on 31 August 2026, up from the previous ~86% chance he would leave by 27 August.