Overview
- The London Ambulance Service declared a significant incident at about 08:40 and deployed a full response around Heathrow’s Terminal 3.
- London Fire Brigade said it was called at 08:14 and remains on scene alongside armed police in the Terminal 3 multi‑storey car park and surrounding Terminal 2/3 areas.
- One man was arrested as officers reported a lingering smell of pepper spray and medics treated multiple people whose injuries are not believed to be severe.
- Commander Peter Stevens said the incident appears to involve a dispute among people who know each other and confirmed it is not being treated as a terrorist event.
- Rail and road access faced disruption, with delays on the Elizabeth and Piccadilly lines and closures affecting M4 access to the airport, as Heathrow urged passengers to allow extra time and check with airlines.