Sir Cyril Smith: Cameron accused of 'compounding cover up' over sex abuse I would say to these gentlemen take them [any allegations] to the police, that's the way we investigate things in this country. The new investigation comes after Sir Cyril was described in the Commons last week as a "29-stone bully" who "imposed himself" on boys in care. Simon Danczuk, the Labour MP for Sir Cyril's former constituency in Rochdale, said that a single, over-arching investigation was needed to look at all the claims. He said: "The whole thing is an absolute mess, it is not a joined up approach. A single police unit needs to look at all the allegations. Mr Cameron and the Home Office also need to look for this dossier which is allegedly held by MI5. Mr Robinson said that before the dossier was seized by MI5, it was sent to the Director of Public Prosecutions who decided that pursuing the allegations was "not in the public interest." Both Lancashire Police and the Crown Prosecution Service say they have been unable to find the dossier. Lancashire Police said: "We take matters such as this extremely seriously and anyone who does come forward should do so with confidence that they will be treated appropriately and with sensitivity.