Two weeks ago violence erupted inside Britain's biggest detention centre. Paul Lewis and Matthew Taylor track down the detainees involved - to try to find out the truth about the riot...The private firm that manages the centre, Kalyx Ltd, is directing all media inquiries to the Home Office. Speaking the day after the riot, the head of the Home Office's immigration service, Lin Homer, criticised detainees for "making a deliberate attempt at sabotage in order to frustrate" their deportation and said the disturbance would be investigated after an evaluation of damage to Harmondsworth.