UK Markets Rally on Iran-US Peace Hopes

London stock markets surged on Friday as investors reacted to growing optimism regarding a potential peace agreement between Iran and the United States. The prospect of de-escalation cooled crude oil prices, providing a broad tailwind for equities and driving the FTSE 100 to its strongest position since late May.

Editorial·June 12, 2026·reads: 1,695

The blue-chip FTSE 100 index climbed 1.6%, settling at 10,471.7 points. This rally signals a sharp shift in market sentiment, marking the index's highest close in nearly three months. The midcap FTSE 250 mirrored this momentum, also posting a 1.6% gain—its most robust single-day performance in over five weeks. By lowering energy cost pressures, the cooling oil market encouraged heavy buying across the board.