Heathrow Airport has said Terminal 4 is safe to reopen, after an ‘incident’ led to the check-in area being closed and evacuated earlier on Monday evening.
Heathrow posted on X just after 6.30pm on Monday to say: “Terminal 4 check-in has been closed and evacuated while emergency services respond to an incident.
“Please do not travel to Terminal 4, colleagues are supporting passengers on site.
“We will provide further information as soon as we can, all other terminals are operating as normal.”
London Fire Brigade (LFB) said specialist crews had been deployed in response to a ‘possible hazardous materials incident’ at the airport and National Rail said trains had been unable to called at T4 while emergency services were dealing with the incident.
Heathrow issued an update at 8.10pm to say: “Emergency services have confirmed Terminal 4 is safe to reopen and we are doing everything we can to ensure all flights depart as planned today.
“We are very sorry for the disruption caused, the safety and security of our passengers and colleagues is our number one priority.
“We encourage passengers to check with their airline for the latest information about their flight this evening and our colleagues will be on hand into the night to assist.”
LFB said at 8pm it was ‘in the process of standing down its response to the incident at Heathrow Airport’.
It added: “The exact cause remains under investigation at this time.”
