Stock Markets March 23, 2026

UK Stocks Open Lower as Middle East Tensions and Local Unrest Weigh on Markets

FTSE 100, European indexes and the pound slide as geopolitical risks escalate and a UK supplements group flags weaker volumes

By Priya Menon
UK Stocks Open Lower as Middle East Tensions and Local Unrest Weigh on Markets

UK equities opened the week lower amid rising geopolitical tensions after a U.S. 48-hour ultimatum concerning Hormuz and a restricted Iranian reopening to neutral vessels. By 08:10 GMT the FTSE 100 was down 1.5%, the pound slipped against the dollar and European benchmarks also fell. Shares of Applied Nutrition PLC plunged after the company warned of weaker Middle East demand despite keeping its full-year revenue guidance. Separately, Britain’s prime minister condemned an antisemitic arson attack in London and plans to discuss the economic fallout with senior ministers and the Bank of England governor.

Key Points

  • Major UK and European indices opened lower as geopolitical tensions in the Middle East escalated - FTSE 100 down 1.5%, DAX down 1.9%, CAC 40 down 1.5%.
  • Currency markets reacted with the pound falling against the dollar - GBP/USD down 0.3% to $1.3306.
  • Applied Nutrition PLC (LON:APNA) dropped over 16% after warning of reduced Middle East volumes but keeping full-year revenue guidance.

London markets began the session under pressure as international tensions in the Middle East persisted, with a U.S. 48-hour deadline tied to Hormuz and Iran signalling only a partial reopening to neutral vessels. Traders responded swiftly to the heightened uncertainty.

At 08:10 GMT the FTSE 100 was trading 1.5% lower. The British pound weakened, with GBP/USD down 0.3% at $1.3306. Elsewhere in Europe, Germany's DAX fell 1.9% and France's CAC 40 slipped 1.5%.

Company-specific moves added to the early market weakness. Applied Nutrition PLC (LON:APNA) shares tumbled more than 16% in early Monday trade after the UK supplements group warned that volumes in the Middle East would be softer as a result of the Iran conflict. Management nevertheless maintained the company's full-year revenue guidance.

On the domestic political front, Prime Minister Keir Starmer publicly denounced an overnight arson attack targeting ambulances serving London's Jewish community, calling it a disturbing act of antisemitic hatred. In a post on X, Starmer said: "This is a deeply shocking antisemitic arson attack. My thoughts are with the Jewish community who are waking up this morning to this horrific news. Antisemitism has no place in our society."

The government confirmed that Starmer intends to meet senior ministers - including Rachel Reeves, Yvette Cooper and Ed Miliband - as well as Bank of England Governor Andrew Bailey, to discuss the economic implications of the crisis. The meeting was described in official channels as a planned review of potential economic impacts.


Market context and implications

Investor focus remained on the interaction between geopolitical developments in the Middle East and market sentiment in the UK and Europe. Movements in currency and equity indices reflected risk-off positioning in the early session, while corporate sensitivity to regional trade and volume disruption was visible in specific stock moves.

What to watch next

  • How tensions around Hormuz and related developments affect regional trade flows and company volumes.
  • Domestic political developments tied to the arson attack and any economic policy discussions that emerge from ministerial and Bank of England consultations.
  • Earnings and guidance updates from companies with Middle East exposure, which may further influence sector and index performance.

Risks

  • Escalation of tensions around Hormuz and limited reopening by Iran could further disrupt regional trade volumes and weigh on companies with Middle East exposure - impacting export-dependent sectors and supply chains.
  • Domestic unrest and targeted attacks such as the arson incident in London may prompt government and central bank discussions about economic implications, creating short-term policy and market uncertainty.

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