Passenger Emily Alner has described the Airbus A330-300 's emergency landing as a "very sharp stop".
She says the pilot appeared "panicked" when the evacuation order was given and says the injuries she sustained (see pictures) were because the evacuation slide was nearly vertical to the ground.
See the video on the ITV National site.
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Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures soared to 27.9C in Northolt shortly after midday on Thursday, making it the warmest April day for 69 years.
The South East will enjoy the best of the weather and along with Paris will be the hottest place in Europe.