FTSE 100 slips 0.3% as oil falls and investors watch for signs of a US-Iran deal at the UN

From the Newshound archive · first published 22 September 2026.

London's blue-chip index lost 30.68 points on Tuesday, closing at 10,708.33, with banks and telecoms leading the decline and consumer stocks partially cushioning the fall. Iranian President Masoud Pezeshkian is heading to New York for the UN General Assembly, where a potential meeting with President Trump has markets on alert. Oil prices dropped after reports that Iran had proposed reopening the Strait of Hormuz in under a week.

Energy stocks fell 1.4%, with BP down 2.2% and Shell down 0.8%, as the Hormuz reopening reports pared earlier oil-price gains.

Meta's AI agent Muse kept advancing up the US App Store charts, lifting the tech giant's shares a further 1.1% following an 11% surge on Monday.