Home Secretary Theresa May is expected to announce a broad independent inquiry into how public institutions handled allegations of child abuse. Mrs May will give details of the probe as she makes a statement to MPs this afternoon.
David Cameron is facing demands for a full review into child abuse amid concerns about the disappearance of a file on alleged paedophile activity at Westminster in the 1980s.
The Prime Minister has ordered a fresh review by the most senior official at the Home Office into what happened to the dossier handed to the then home secretary Lord Brittan by the Conservative MP Geoffrey Dickens in 1983.
Shadow home secretary Yvette Cooper said the move did not go far enough and called for a full investigation into all the allegations of historic child abuse.
Labour MP Simon Danczuk, who carried out an investigation into abuse by the late Liberal MP Cyril Smith and who raised the issue of what happened to the Dickens' file at a hearing of the Commons Home Affairs Committee, also said there needed to be a full public inquiry.
The MP who raised the claims that a paedophile ring operated in Westminster during the 1980s said new allegations have now come to light.
Lord Brittan has defended his handling of a dossier alleging paedophile activity in Westminster when he was home secretary in the 1980s.
A 1980s dossier claiming paedophile activity at Westminster may have mysteriously gone missing but the questions still remain.