In a surprise development, the expected resignation date of Prime Minister Keir Starmer has shifted forward by 1 week, from 20 Aug 2026 to 14 Aug 2026, according to Polymarket data.
The shift in the implied resignation date suggests growing market expectations that Starmer may step down as PM sooner than previously anticipated. The new date implies an ~86% chance Starmer will have resigned by 14 Aug 2026.