The date by which Keir Starmer is expected to announce his resignation as Prime Minister has shifted 4 days later, from 8 October 2026 to 12 October 2026, according to the latest market signals.
The change in the implied resignation date comes as Starmer's position as Labour leader continues to be scrutinized amid ongoing challenges. The ~86% probability that he will step down by the new date of 12 October 2026 suggests growing uncertainty around his future as PM.