Common's victim's name was changed to Alfie Cartwright, a waiter. The role was played by actor David Leon. The film was shown for the first time on 22 July 2007, on Channel 4, almost two years after the murder, to mark the 40th anniversary of decriminalisation of homosexuality in England and Wales, and was meant to be a film against violence against gay people and hate crimes based on sexual orientation. It was shown a second time on More4, just a few days later, on 30 July 2007. 2007: Metropolitan Police review In July 2004 an independent inquiry into police procedures carried out by the independent Lesbian Gay Bisexual Transgender Advisory Group for the Metropolitan Police was announced. In May 2007 the report for the independent review was released; it had examined how detectives had handled 10 murders of gay men or transsexuals. The report found that some police inquiries were hampered by lack of knowledge, reliance on unfounded stereotypes and personal prejudices; these problems were mirrored and exacerbated by media coverage. The review recognised that Scotland Yard's work with the gay, lesbian and transsexual communities and its investigative processes had improved significantly since the 1990s, but warned that more radical steps were needed. The cases reviewed, and the findings, included: Actor Michael Boothe, in west London died in April 1990, beaten to death by a gang of up to six men close to a public lavatory. The police said he had been the victim of "an extraordinarily severe beating, of a merciless and savage nature". He managed to give a description of his attackers before he died, and a reward of £15,000 was offered, but no one was caught, and the crime remains unsolved. The police review identified institutional homophobia within the Metropolitan Police as a factor. Colin Ireland, age 43, who in 1993 was jailed for life for murdering five gay men. Ireland picked up the men at pubs in London, and then killed them in their own homes. A Scotland Yard review showed that Ireland's capture was hampered by institutional homophobia within the Metropolitan Police. Andrew Collier, a housing warden, aged 33, was one of Ireland's victims; the murder was classified as homophobic and linked with the death of Peter Walker, Ireland's first victim. The report said the police could have done more to warn the community of the links between the murders. Emanuel Spiteri, age 41,