1990 Strangeways Prison riot April, HM Prison Durham, HM Prison Winchester and HM Prison Wandsworth on 4 April, and HM Young Offenders Institute Glen Parva on 6 April. The weekend of 7 April and 8 April saw protests across the prison system. At HM Prison Leeds there was a sit-down protest after the arrival of over 100 prisoners who had been transferred from Strangeways. At HM Prison Dartmoor, between 100 and 120 prisoners wrecked D wing of the prison, and 12 prisoners also protested on the roof of C wing unfurling a banner that read "Strangeways, we are with you". 32 prisoners from Dartmoor
1990 Strangeways Prison riot the riot due to the disruption caused, including the closure of roads around the prison. A leather-jacket retailer in the vicinity of the prison claimed to have lost £20,000 in revenue since the riot had begun. Greater Manchester Police asked for £2 million to cover the costs of policing the riot, which it described as the "most savage incident of its kind ever experienced within the British prison service". On 17 April the remaining seven prisoners began negotiations to attempt to bring the rooftop protest to an end. Negotiations took place inside the prison between two Home Office officials and