Police are investigating possible murders linked to Elm Guest House in south-west London after claims of a cover-up. A number of allegations have been made. So far the only politician to have been implicated is the Liberal MP Cyril Smith, who died in 2010, but other unnamed politicians were also alleged to have been involved in a Westminster paedophile ring. Smith is alleged to have abused boys at Knowl View residential school in Rochdale and at Elm Guest House, in Barnes in south-west London, in the 1970s and 80s. Greater Manchester police are investigating allegations of abuse by Smith at Knowl View, where Smith was a governor. Other MPs were said to have attended the Elm Guest House. After claims made by the Labour MP Tom Watson in 2012, the Metropolitan police launched Operation Fairbank into child abuse at the guesthouse. Watson said there was "clear intelligence suggesting a powerful paedophile network linked to parliament and No 10". A dossier of evidence of an alleged paedophile ring, involving several MPs, including Smith, and other public figures, was handed to the Home Office in 1983, by the Conservative MP Geoffrey Dickens, who died in 1995. The 40-page dossier has since been destroyed or lost, according to a Home Office review. At least three MPs were reported to have been questioned in 1982 after a police raid on the guesthouse. It was reported at the time that it was being used as a brothel where children as young as 10 were abused. Two children living in the house were taken into care.