Between 1974 and 1989, the West Midlands Police force operated the West Midlands Serious Crime Squad. It was disbanded after allegations of endemic misconduct, leading to a series of unsafe convictions. These included allegations that officers had falsified confessions in witness statements, denied suspects access to solicitors and used torture such as "plastic bagging" to partially suffocate suspects in order to extract confessions. They were alleged to have abused payments to informers. A series of around 40 prosecutions failed in the late 1980s as defendants showed that evidence had or may have been tampered with. West Yorkshire Police led an investigation which led to a small number of internal disciplinary proceedings, but did not recommend any prosecutions for lack of evidence. Howev