Overview

• Heathrow closed and evacuated Terminal 4’s check-in area after reporting the presence of hazardous material.
• London Fire Brigade said it was called at 17:01, sending units from Feltham, Heathrow, Wembley and other stations.
• The airport told the public not to travel to Terminal 4 and said other terminals continued operating normally.
• Rail services did not stop at Terminal 4 during the response, and evacuees reported waiting outside with thermal blankets distributed by staff.
• Passengers later reported being allowed back inside and flights departing with delays, with the BBC indicating no significant cancellations.