Britain was the fastest growing economy in the G7 through the first half of 2026, and the official numbers have just been nudged upward. The Office for National Statistics revised second quarter growth to 0.5 per cent from its earlier estimate, Reuters reported, consolidating the UK’s position at the top of the advanced economy table for the six months to June.
A quarter point of growth sounds modest until the comparison is drawn. The United States, Germany, France, Italy, Japan and Canada all expanded less over the same period, and several of them spent the spring braced for a trade war contraction that, so far, has not fully arrived. Britain’s run has been driven less by a surge than by resilience: household spending held up, services kept hiring, and the recession that forecasters wrote into 2025’s ending did not appear in 2026’s opening.
Two caveats sit on the revision. First, momentum is easing. Business surveys through the summer showed employers wary about investment, and the British Chambers of Commerce’s September outlook upgraded growth expectations only in the most cautious language. Second, the numbers capture an economy before the current squeeze. Energy bills are forecast to jump by about £276 a year for typical households from January, per the Guardian’s reading of Ofgem data, and mortgage rates have crept up since the summer.
The productivity picture is the longer argument. UK output per hour has grown slowly for two years, which means the current growth leans on employment and consumption rather than on making more per hour worked. That is a model that runs out of road when interest rates or energy costs bite households, which is precisely what the next two quarters will test.
For policymakers the revision is still political gold. A fastest in the G7 headline, confirmed rather than provisional, gives the Treasury ground to argue its stability plan is working as it heads into a Budget where the calls for tax relief are getting louder. The ONS did not endorse anyone. It simply revised the arithmetic, and the arithmetic, for now, is kind.
The third quarter estimate lands at the end of November. Markets will watch whether the G7 lead survives contact with winter bills.
