Rightmove's August 2026 index shows average new seller asking prices down 2.0% to £364,999, the largest August fall since 2018. The more useful figure for agents though is stock, which is at a twelve-year high for the time of year, making competition for buyer attention the central marketing problem this autumn.

Four out of five flats aren't selling within six months. Across the rest of the market it's about half. If you've got flats sitting on your board right now you already knew that. You just didn't have the number, and now you do.