What happened to UK interest rates over summer 2026?

The Bank of England held Bank Rate at 3.75% at both its June and July meetings. The votes are what caught the eye: two of the nine Monetary Policy Committee members wanted a quarter-point rise in June, and that grew to three in July. Rather than debating when to cut, part of the committee was arguing for an increase, which is why hopes of a quick run of rate cuts faded over the summer.

Why did gilt yields rise if the Bank of England did not raise rates?

Gilt yields reflect what investors expect over many years, not just today's Bank Rate. Over the summer, investors grew more concerned that inflation could stay above target and about how much the government will need to borrow. The 10-year gilt yield moved above 5% in August, and in early September the 30-year yield reached 5.89%, its highest level since 1998. Markets can tighten borrowing conditions on their own, even when the central bank stands still.

Is it bad news for me if bond yields go up?

It depends on whether you already hold bonds or are buying them. Bond prices and yields move in opposite directions, so the value of existing bonds, particularly long-dated ones, falls when yields rise. Someone investing new money, however, can lock in a higher income than has been available for much of the past decade. Shorter-dated bonds are usually less sensitive to these swings than longer-dated ones.

How did UK shares perform between June and August 2026?

Better than many overseas markets in July. The FTSE 100 rose about 3.5% that month to close at 10,868.05, after touching a record intraday high of 10,989.45, and the FTSE 250 gained 4.2%. August was flatter, with the FTSE 100 ending the month at 10,824.26. The index's tilt towards banks, energy and mining companies, rather than technology, helped it avoid the worst of the global sell-off in AI-related shares.

Should I change my investments because of this kind of market news?

Not necessarily. A quarter like this shows how quickly markets can move in different directions: shares rose while bonds fell, and individual countries in Asia and emerging markets diverged sharply. That is a strong argument for a diversified portfolio built around your own goals and time horizon, rather than reacting to short-term headlines. If recent movements have raised questions, a review with an adviser is a sensible way to check your plan is still on track.

Quarterly Market Commentary

Between June and August 2026, investors had to make sense of a market that seemed to be sending two different messages. Shares in most major economies held up well, helped by strong company profits and continued enthusiasm for artificial intelligence. Government bonds, on the other hand, came under sustained pressure as investors worried that inflation would prove harder to shift than hoped, and that governments would need to borrow heavily for years to come.

Higher energy prices, linked to renewed tension in the Middle East, sat behind much of the uncertainty. Central banks went into the summer hoping to have room to cut interest rates. By the end of August, several were openly discussing whether rates might need to rise instead. Here is how that played out across the main markets, and what it may mean for your own finances.

The UK: record highs for shares, pressure on gilts

UK shares had a strong summer, though it was concentrated in July. The FTSE 100 put on roughly 3.5% that month and finished at 10,868.05, having touched a record 10,989.45 during trading. The more domestically focused FTSE 250 did even better, rising 4.2% and passing 24,000 for the first time since 2021. Banks, energy companies and miners led the way, and the UK’s relatively small technology sector meant the index was less exposed when AI and semiconductor shares sold off around the world. Interest from individual investors picked up too, with trading in FTSE 100 shares on IG’s platform reported to be 41% higher than a year earlier.

August was quieter. The FTSE 100 finished the month at 10,824.26, slightly below its end-of-July level, and on 27 August it suffered its sharpest one-day fall in about six weeks, with lenders and oil producers leading the decline.

Inflation moved the wrong way during the period. CPI fell to 2.6% in June but rose to 2.9% in July, with CPIH reaching 3.1%. Core inflation stayed at 2.6%, and services inflation eased slightly to 3.4%, but the headline figure still sat above the 2% the Bank of England aims for. The Bank kept Bank Rate at 3.75% in both June and July, but the voting is the more telling detail: two committee members wanted a rise in June, and three in July. For borrowers hoping for a steady run of rate cuts, that was a clear signal to expect a slower path.

The bond market was where nerves really showed. The 10-year gilt yield climbed through July and moved above 5% in August, reaching about 5.04% on 26 August. Shortly after the period ended, in early September, the 30-year gilt yield rose to 5.89%, its highest level since 1998. Politics added to the pressure. Investors were watching closely how Prime Minister Andy Burnham’s government and its new Chancellor, John Healey, would approach spending, taxation and borrowing ahead of the Autumn Budget on 28 October.

There were encouraging signs as well. The Lloyds Business Barometer climbed to 53% in August, and the services PMI edged up from 52.1 to 52.5, pointing to continued growth. A resilient economy supports company earnings, yet it also gives the Bank of England less reason to hurry with rate cuts while price pressures persist.

Europe: rising inflation and the first ECB rate rise in years

Energy shaped the Eurozone’s summer. Inflation fell from 3.2% in May to 2.8% in June, then crept up to 2.9% in July before jumping to 3.3% in August’s early estimate, as energy price inflation accelerated to 14.3%. Core inflation, which strips out food and energy, was far more stable at a little above 2%, so the jump mostly reflected fuel and power costs, not a general rise in prices.

The European Central Bank responded in June with its first interest rate rise in almost three years, lifting its deposit rate by a quarter of a percentage point to 2.25%. It held at that level in July, and by late August markets were expecting another increase in September.

Shares were more resilient than the headlines might suggest. June brought a 4.6% gain for the EURO STOXX 50, followed by 0.5% in July and around 1% in August, leaving the index near 6,420. The broader STOXX Europe 600 recorded a fifth consecutive monthly gain. German government bond yields told a different story: the 10-year Bund yield went from roughly 2.91% in late June to around 3.32% by late August.

Political risk also came back into focus. Concerns about France’s budget deficit and its 2027 presidential election pushed French government borrowing costs above Italy’s for much of the summer, which is unusual given Italy’s historically higher debt.

The US: strong shares, a more hawkish Federal Reserve

US equities ended the summer close to record levels. After a weaker June for technology shares and a July in which investors rotated towards value, financial and energy companies, August brought fresh highs. By the end of August the S&P 500 stood at 7,686.14, a gain of about 12.3% since January, while the Nasdaq had risen 13.5% and the smaller-company Russell 2000 around 19.1%.

Inflation improved but stayed well above target. Having reached 4.2% in May, consumer price inflation slowed to 3.5% in June and 3.4% in July, with core inflation at 2.5%. The Federal Reserve left interest rates in a range of 3.50% to 3.75% in June and July, although three policymakers voted for a rise in July. At the Jackson Hole conference late in August, remarks from Fed Chair Kevin Warsh struck a hawkish tone, and by the end of the month markets were pricing in a better than 65% chance of a rate rise in September.

Bond markets reacted accordingly. The 10-year Treasury yield rose from around 4.44% at the end of June to about 4.75% at the end of August, and the 30-year yield moved above 5.3%, its highest since 2007. On the final day of August, renewed US-Iran tensions pushed Brent crude to around $90 a barrel and knocked share prices lower, a reminder of how closely energy, inflation and markets are now linked.

Japan: a new interest rate era

Japan’s summer was eventful. The Nikkei 225 recorded its first month-end close above 70,000 in June, fell 8.1% in July as investors took profits, then recovered 3% in August to finish at 66,311.93.

The bigger story was the shift in interest rates. In June the Bank of Japan lifted its policy rate to 1%, continuing its gradual exit from the near-zero rates that defined Japan for decades. The 10-year government bond yield approached 2.95% in August, a high not reached since the 1990s. Prime Minister Sanae Takaichi’s large investment programme, worth more than ¥370 trillion, raised questions about government borrowing. The weak yen prompted the authorities to spend around ¥15.4 trillion, roughly £76 billion, supporting the currency between 30 July and 26 August.

Asia and emerging markets: wide differences between countries

Asian and emerging markets showed just how differently individual countries can behave within a single region. In July the MSCI Emerging Markets Index lost around 3%, as South Korea and Taiwan, both dominated by technology companies, sold off sharply. South Korea alone dropped 17.9% in US dollar terms. In the same month, China gained 9%, Brazil 6.4% and Colombia 20.1%.

August brought a strong rebound. Emerging market shares rose 3.4%, their best August since 2004 according to Janus Henderson, leaving the index up around 24% for the year. However, South Korea and Taiwan made up more than half of the benchmark by the end of June, so a supposedly diversified index had become heavily dependent on the AI and semiconductor cycle.

For UK investors, these figures are quoted in US dollars, so movements in sterling can add to or reduce the returns received in pounds. When comparing funds, it is worth looking at performance in sterling, and at how much of a regional fund is concentrated in one country or sector.

Bonds: the market’s warning light

Across the developed world, bond markets had a difficult summer, with August the toughest month. Investors demanded more compensation for lending to governments over long periods, reflecting concerns about inflation, heavy government borrowing and uncertainty over central bank policy. Even so, money kept flowing into fixed income. Bond funds took in about $55 billion in August, with shorter-dated and inflation-linked bonds proving particularly popular.

Higher yields mean more income for new investors, but lower values for bonds already held, especially long-dated ones. Different types of bonds carry very different levels of interest rate risk.

What this means for you

The clearest lesson from the summer is that inflation, interest rates and government finances are now closely connected, and all three can affect household finances. Higher bond yields can eventually feed through to fixed-rate mortgages and other borrowing. Savers, meanwhile, continue to benefit from cash and short-term rates well above the levels seen through much of the last decade.

For investors, the period was a reminder of the value of diversification. Shares rose while bonds fell, and returns varied enormously between countries and sectors. Holding a spread of investments matched to your goals, time horizon and attitude to risk remains a more reliable approach than trying to predict the next market move, as our article on navigating market uncertainty explains. If you are tempted to react to recent volatility, it is also worth reading why time in the market tends to matter more than timing it.

We help individuals and families across Worcestershire and Warwickshire build and review investment portfolios through changing market conditions. If the past few months have raised questions about your own investments or plans, we would be glad to talk them through with you.

The value of investments can fall as well as rise. You may get back less than you invest. Past performance is not a reliable indicator of future performance. Figures quoted reflect market conditions between June and August 2026 and are not updated. This article is for information only and does not constitute personal financial advice.

Quarterly Market Commentary — September 2026