The date by which Prime Minister Keir Starmer is expected to announce his resignation has been pushed back by 1 day, from 12 Aug 2026 to 13 Aug 2026, according to the latest Polymarket data.
The shift in the implied resignation date comes as traders adjust their bets on when Starmer will step down as Labour leader and PM. The market is currently pricing in an ~86% chance Starmer will have resigned by the new 13 Aug 2026 date.