Stock Markets March 26, 2026

UK stocks slide as Middle East war uncertainty and OECD downgrade weigh on markets

FTSE 100 and European peers retreat; OECD cuts UK growth outlook and flags higher inflation as energy disruptions persist

By Nina Shah NXT
UK stocks slide as Middle East war uncertainty and OECD downgrade weigh on markets
NXT

UK and broader European equities declined Thursday as lingering uncertainty around the Middle East conflict pressured markets and the pound weakened. The OECD lowered its 2026 growth forecast for the UK and projected higher near-term inflation, while individual UK-listed companies issued results and updates that produced mixed reactions from investors.

Key Points

  • FTSE 100 dropped 1.4% as uncertainty over the Middle East conflict persisted; DAX and CAC 40 fell 1.6% and 1.1% respectively.
  • The OECD cut its 2026 UK growth forecast to 0.7% from 1.2% and projected UK inflation to rise to 4% this year, attributing the downgrade to disrupted energy supplies and higher commodity prices related to the US-Israel war with Iran.
  • Company-specific news was mixed: Next reported higher annual profits but warned of cost and demand pressure from the conflict; FirstGroup improved its fiscal 2026 net debt guidance; UBS upgraded Close Brothers to Buy; Currys' CEO announced his departure.

UK equities and major continental indexes fell on Thursday as investors grappled with continued uncertainty over the Middle East conflict and its potential economic fallout. U.S. President Donald Trump said Iranian negotiators were "begging" for a peace deal, while Iran earlier in the week signalled it had no intention of directly negotiating with the U.S., comments that underscored persistent geopolitical tension.

At 12:31 GMT the blue-chip FTSE 100 was down 1.4%. Currency markets reflected risk aversion, with the British pound weakening 0.3% against the dollar to 1.3328. Stocks in Germany and France moved lower as well, with the DAX falling 1.6% and the CAC 40 down 1.1%.


OECD cuts UK growth forecast

The Organisation for Economic Co-operation and Development in Paris trimmed its 2026 growth forecast for the UK to 0.7% from a prior projection of 1.2% in its interim economic outlook. The OECD attributed the reduction to the effects of disrupted energy supplies and elevated commodity prices arising from the US-Israel war with Iran. In the same update the policy body forecast UK inflation would accelerate to 4% this year, up from 3.4% in 2025, leaving inflation well above the Bank of England's 2% target.

The OECD also set out expectations for monetary policy, anticipating the Bank of England would hold its key interest rate at 3.75% before cutting by a quarter-point in early 2027 as inflation pressures abate. The organisation expects consumer price inflation to ease to 2.6% the following year.


Corporate headlines: mixed corporate updates

Among individual UK-listed companies, Next PLC reported higher annual earnings but cautioned that the US-Israeli war against Iran is likely to raise costs and weigh on demand. Next posted group profit before tax of 1.158 billion, up 14.5% from 1.011 billion a year earlier, with group sales increasing 10.8% year-over-year to 7 billion. Earnings per share were 744.2 pence. The shares rose following the results.

Transport operator FirstGroup PLC issued a pre-close trading statement noting that performance at both its First Bus and First Rail businesses met expectations. The company revised its net debt guidance for fiscal 2026 to 135 million to 145 million, an improvement from the 140 million to 150 million range it provided in December, a revision the company attributed in part to the Tootbus acquisition.

In the financial services sector, UBS upgraded Close Brothers Group plc to Buy from Neutral and set a price target of 555 pence. The stock has fallen roughly 25% year-to-date, the report noted, reflecting investor concerns about potential motor finance redress costs, a slow-to-recover loan book, declining income and profits, and higher restructuring charges.

Electronics retailer Currys PLC said Chief Executive Alex Baldock will step down after eight years to take up a new external role. The board will begin a formal search for his successor and Baldock will remain in post during that process. Currys shares moved lower after the announcement.


Market context and immediate implications

The combination of heightened geopolitical risk and a downgraded growth outlook for the UK appeared to be the dominant drivers of Thursday's market moves. The OECD's assessment that the UK faces higher inflation and disrupted energy supplies directly ties macroeconomic forecasts to the developing conflict. Meanwhile, company-level updates were a secondary influence on UK equity performance, with investors reacting to both stronger-than-expected results and management changes.

For now, market participants will likely monitor geopolitical developments, energy price trajectories, and any further official revisions to macroeconomic projections or central bank guidance for clearer signals on the path for growth and inflation.

Risks

  • Geopolitical uncertainty tied to the Middle East conflict - impacts energy, commodity prices, and inflationary pressures across the economy and markets.
  • Elevated inflation and disrupted energy supplies - could affect consumer spending and corporate costs, particularly for energy-sensitive sectors and retailers.
  • Company-specific execution and exposure risks - examples include potential motor finance redress and a slow-to-recover loan book at Close Brothers, and leadership transition risk at Currys.

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