The number of profit warnings issued by UK-listed companies reached its highest level in nearly two years during the third quarter of 2026, according to a report by advisory firm EY. Between July and the end of September, 65 public firms issued downgrades to their financial forecasts. This figure is an increase from the 59 warnings recorded in the previous quarter and represents the highest volume since late 2024, when 71 warnings were issued.
The data follows a year in which 17% of all UK-listed companies issued at least one profit warning. Researchers at EY attributed the trend to a combination of rising operational costs, geopolitical instability, and uncertainty regarding upcoming government policy changes. The report was published as the government prepares for its first autumn Budget since Andy Burnham became prime minister.
According to the report, geopolitical instability and policy shifts were cited as primary drivers in 54% of profit warnings during the third quarter. Specifically, 38% of notices mentioned the effects of ongoing conflict in the Middle East. Additionally, 35% of warnings pointed to rising costs, including inflationary pressures and higher business expenses, while others noted weak consumer confidence. Jo Robinson, a partner at EY-Parthenon, stated that supply-side disruptions, such as energy shocks and labor shortages, have become more significant factors than traditional demand-led economic cycles.
This trend directly affects investors, shareholders, and the management of companies listed on the UK stock market. When firms signal lower-than-expected earnings, it can lead to share price volatility. Business owners and executives are currently facing an environment where the cost of doing business is rising, which Robinson noted is making forecasting and investment decisions harder for these organizations.
The scale of the issue is reflected in the 65 firms currently affected, an increase over the previous quarter. For employees at these companies, profit warnings can lead to cost-cutting measures. Industry groups have cited these cost pressures in recent appeals to the government to avoid increasing business taxes in the upcoming fiscal statement.
The next significant indicator for these businesses will be the autumn Budget, scheduled for late October 2026. The report indicates that profit warnings linked to policy change and uncertainty have become a regular feature. The outcome of the Budget will determine the tax framework these companies navigate as they attempt to stabilize forecasts. Following the Budget, the next quarterly report from EY will clarify whether these warnings translate into deeper fiscal distress or if firms manage to absorb the current supply-side shocks.