A major disturbance unfolded at Harmondsworth detention centre as a power cut caused chaos and riot police descended on the scene.
Over 100 detainees reportedly broke into the courtyard of the centre, close to Heathrow Airport, at around 2am, with some reportedly armed with knives and bits of wood.
Staff were moved from the area after threats of violence as the chaos was triggered by a power cut earlier in the night and there were reports of fires being set at the centre.
