| Consensus | Consensus Range | Actual | Previous | |
| Month over Month | 0.5% | 0.2% to 0.5% | 0.5% | 0.3% |
| Year over Year | 3.1% | 2.8% to 3.1% | 3.1% | 2.9% |
| Core CPI - M/M | 0.3% | 0.2% | ||
| Core CPI - Y/Y | 2.6% | 2.6% to 2.7% | 2.6% | 2.6% |
Highlights
UK inflation increased in August 2026, indicating renewed pressure on household budgets. The Consumer Prices Index (CPI) rose by 3.1 percent annually, compared with 2.9 percent in July, while the broader CPIH measure increased from 3.1 percent to 3.3 percent. Both measures recorded monthly growth of 0.5 percent, exceeding the 0.3 percent rise reported in August 2025.
Transport costs, particularly motor fuels, were the principal drivers of the acceleration. This suggests that the increase may partly reflect energy-related volatility rather than a broad-based resurgence in domestic inflation. Nevertheless, rising fuel costs could generate secondary effects by increasing business transportation and distribution expenses, which may eventually be passed on to consumers.
Encouragingly, core CPI remained unchanged at 2.6 percent, while core CPIH held at 2.9 percent. Services inflation also remained stable, although its rates of 3.4 percent under CPI and 3.6 percent under CPIH indicate that underlying domestic price pressures persist. Meanwhile, goods inflation rose sharply from 2.2 percent to 2.7 percent.
In summary, the figures present a mixed outlook as headline inflation is moving further above the 2 percent target, but stable core inflation suggests that the increase is not yet broadly entrenched. These updates leave the RPI at 17 and take the RPI-P to 34, meaning that economic activities continue to outpace market expectations in the UK.
Market Consensus Before Announcement
Inflation is seen picking up in August relative to July as fuel costs rebounded. The consensus sees CPI up 0.5 percent on the month and 3.1 percent on year versus 0.3 percent and 2.9 percent, respectively, in July.
Definition
The consumer price index (CPI) is an average measure of the level of the prices of goods and services bought for the purpose of consumption by the vast majority of households in the UK. It is calculated using the same methodology developed by Eurostat, the European Union's statistical agency, for its harmonised index of consumer prices (HICP). The CPI is the Bank of England's target inflation measure.
Description
The consumer price index is the most widely followed indicator of inflation. An investor who understands how inflation influences the markets will benefit over those investors that do not understand the impact. In countries such as the UK, where monetary policy decisions rest on the central bank's inflation target, the rate of inflation directly affects all interest rates charged to business and the consumer. Inflation is an increase in the overall price level of goods and services. The relationship between inflation and interest rates is the key to understanding how indicators such as the CPI influence the markets - and your investments.
Inflation (along with various risks) basically explains how interest rates are set on everything from your mortgage and auto loans to Treasury bills, notes and bonds. As the rate of inflation changes and as expectations on inflation change, the markets adjust interest rates. The effect ripples across stocks, bonds, commodities, and your portfolio, often in a dramatic fashion.
By tracking inflation, whether high or low, rising or falling, investors can anticipate how different types of investments will perform. Over the long run, the bond market will rally (fall) when increases in the CPI are small (large). The equity market rallies with the bond market because low inflation promises low interest rates and is good for profits.
For monetary policy, the Bank of England generally follows the annual change in the consumer price index which is calculated using the European Union's Eurostat methodology so that inflation can be compared across EU member states.