UK GDP 3-Month Avg (Aug) 0.7% vs. Exp. 0.5% (Prev. 0.5%)

A beat on the rolling three-month GDP measure has historically been among the less reliable UK growth signals, since the monthly ONS series is prone to revision and distorted by one-off factors such as strikes, public holidays and weather, which tends to dampen the durability of any sterling and gilt reaction relative to the initial print. The sequence in past episodes of this kind has been a knee-jerk move higher in front-end gilt yields and sterling, followed by reassessment once the composition is visible: growth driven by a single month's catch-up or a volatile services component has tended to fade, while broad-based strength across services, production and construction has more often held. The relevant channel is rate expectations, with a firmer growth backdrop historically arguing for the Bank of England to tolerate restrictive policy for longer, steepening the short end of the gilt curve rather than shifting the long end, and the distinction worth drawing is between activity strength that feeds wage and services inflation persistence and strength that is purely compositional. The follow-ons are the monthly breakdown and expenditure detail within the release, any concurrent revisions to prior months, and how the print sits alongside the next labour market and CPI readings, which together carry more weight on the MPC's reaction function than GDP alone. As a single data point in a series the Bank itself has treated with caution, the signal is directional but subordinate to the inflation calendar.