Shell had the highest annual revenue of all companies based in the United Kingdom in 2026, at approximately billion U.S. dollars. BP had the second-highest annual revenue at over billion dollars, followed by HSBC Holdings, which had a revenue of around billion U.S. dollars. In terms of global employee numbers, however, Compass Group had the highest number among UK-based businesses, at approximately a million, followed by Tesco at and HSBC at .
Big Oil, a banking giant, and Britain's top supermarket chain
The two companies listed as having the most revenue in the UK this year are also two of the biggest oil and gas companies in the world, alongside Chevron, Eni, ExxonMobil, and TotalEnergies. After a huge surge in energy prices in 2022, these companies saw their profits recede slightly in 2023, but clearly remain in strong financial positions as of 2024. HSBC Holdings, meanwhile, was the largest bank in Europe in terms of market capitalization, and was estimated to have the second-highest number of UK-based customers in 2024. The company with the fourth-highest revenue in this year, Tesco has by some distance the largest grocery-market share in Great Britain, a position it has maintained despite growing competition from discounters like Lidl and Aldi.
UK economy health check
In the first quarter of 2025, the UK economy grew by percent, emerging from a brief slowdown in growth towards the end of 2024. Consumer Price inflation, has, however, started to increase, with the inflation rate reaching 3.5 percent in April, the highest rate since January 2024. Furthermore, the UK labor market is showing signs of weakness, with quite a high number of job losses since the start of the year. Alongside these generally negative signs, business confidence in the UK has been falling, with the main concern of UK firms being that of taxation, as of early 2025.