Heathrow has reopened following an incident involving hazardous materials.

Heathrow Airport has reopened following a scare involving potential hazardous materials. The departure hall of Terminal 4 was evacuated as a safety measure, and no traces of any harmful substances have been detected, according to the Metropolitan Police.

Fire crews responded to the situation and investigated the terminal for possible hazardous materials. A spokesperson for Heathrow has expressed apologies for the disruption and mentioned ongoing efforts to coordinate with airlines to ensure timely flight departures. The London Fire Brigade was dispatched to Terminal 4 around 17:00 BST to assess the situation, leading to the precautionary evacuation of the check-in area.