UK inflation picked up more than expected in August, climbing to 3.1% from 2.9% in July. The rise puts fresh pressure on the Bank of England just days before its next rate decision, scheduled for Thursday.
The headline figure came in hotter than the Bank's own July projection, even though it matched the median forecast among economists. The Office for National Statistics reported that core inflation—which strips out volatile items like energy and food—held steady at 2.6% for a fourth straight month. Services inflation, a closely watched gauge because it can reflect wage pressures, also stayed at 3.4%.
That steadiness in the underlying measures lines up with recent data showing wage growth near its weakest since 2020. Slower pay rises tend to ease concerns that price increases will become entrenched, which is why the Bank of England has been watching these figures closely.
What's driving the numbers?
Headline inflation is the rate most people see in the news—it measures the average change in prices for a basket of goods and services. The jump to 3.1% suggests that some costs, possibly including energy or food, rose faster than anticipated. However, the fact that core and services inflation did not accelerate is a sign that the underlying pressure may be cooling.
For the Bank of England, the decision on Thursday is a balancing act. Raising interest rates—making borrowing more expensive—is the main tool it has to cool inflation. But with wage growth slowing and core inflation stable, some policymakers may feel that the current level of rates is already doing enough.
Markets are not convinced either way. They currently see about a one-in-three chance of a quarter-point hike on Thursday. That means the majority of investors expect the Bank to hold rates steady, but a significant minority think another increase is possible.
What it means for investors
For everyday investors, the inflation figure matters because it influences what the Bank of England does with interest rates, which in turn affects everything from mortgage rates to the returns on savings accounts and the performance of stocks and bonds.
If the Bank raises rates, borrowing costs for households and businesses tend to rise, which can weigh on economic growth and corporate profits. That often hits stock prices, especially for companies that rely heavily on borrowing. On the other hand, higher rates can be good news for savers, as banks typically pass on the increase to savings accounts.
If the Bank holds rates, the immediate impact may be smaller, but investors will be watching the accompanying statement for clues about future moves. A more hawkish tone—suggesting further hikes are likely—could still push bond yields up and put pressure on equities.
The fact that core inflation is holding at 2.6% is a key signal. It suggests that the recent rise in headline inflation may be driven by temporary factors, such as energy price swings, rather than a broad-based acceleration. That could give the Bank room to stay patient.
Still, the rise to 3.1% is a reminder that inflation is not yet fully under control. The Bank's target is 2%, and it has been above that for some time. The longer inflation stays elevated, the more pressure there is on the Bank to act.
For investors, the key takeaway is uncertainty. The one-in-three probability of a hike reflects that the outcome is genuinely uncertain. That uncertainty itself can cause market volatility, so investors should be prepared for possible swings in the days following the decision.
In the broader context, the UK is not alone in facing inflation pressures. Central banks around the world have been grappling with similar challenges, and their decisions often move global markets. For instance, the Bank of Japan is expected to raise rates to their highest level in 31 years, a move that could have ripple effects. Meanwhile, rising oil prices have stoked inflation fears in the eurozone, pushing bond yields to multi-year highs.
For UK investors, the immediate focus will be on Thursday's decision and the Bank's guidance. Whether they hold stocks, bonds, or cash, the outcome will shape the outlook for returns in the months ahead.
