Allegations of child sex abuse were first made against Lord Janner in 1991 during the trial of convicted paedophile Frank Beck

June 1970 Janner wins Leicester North West Greville Janner, a qualified barrister, successfully wins the seat of Leicester North West for Labour and enters the House of Commons aged 41.

1991 Police investigate Janner Leicestershire Police investigates allegations that Janner was responsible for abuse at children's homes in Leicester. Janner is investigated alongside Frank Beck - a former Royal Marine turned social worker who was in charge of several children’s homes in Leicestershire from 1973 - 1986. Janner is questioned by appointment.

August 1991 Frank Beck goes on trial Frank Beck goes on trial charged with abusing more than 100 children in his care. During the case he claims he had intervened to prevent Janner from abusing and buggering a child at one of the homes.

November 1991 Evidence against Janner A former children’s home resident gives evidence at the trial in which he claims Janner regularly abused him.

November 1991 Beck sentenced to five life terms Frank Beck (Picture: Richard Watt) Frank Beck is convicted of a string of child abuse and rape charges and is sentenced to five life terms.

December 1991 Janner denies allegations in House of Commons speech Picture: ITN Janner uses a speech in the House of Commons to vehemently deny the allegations made against him and is supported by a number of colleagues from all sides of the House some of whom call for a change in the law to protect the reputation of those accused of such crimes.

December 1991 No further action against Janner The Crown Prosecution Service announces no further action is to be taken against Janner over the allegations.

May 1997 Janner becomes a baron Steps down as an MP and is ennobled as a Life Peer taking the title Baron Janner of Braunstone.

2002 Victim claims abuse by Janner An alleged victim gives evidence to Leicester Police claiming he was abused by Janner. The evidence is never passed to the CPS for consideration.

2006 Another victim comes forward Another alleged victim comes forward claiming to have been abused by three people, one of whom was Janner. The evidence is passed to the CPS for consideration.

2007 CPS decides there is insufficient evidence to prosecute

January 2013 Operation Enamel is launched Operation Enamel is established by Leicestershire Police and more than a dozen allegations are made against Janner.

December 2013 Police search Janner’s home as part of the investigation

March 2014 Police search Janner’s Westminster offices

April 2015 Enough evidence, no prosecution Alison Saunders (l) and Lord Janner (Picture: PA/Rex) CPS announce it is not in the public interest to prosecute Janner despite there being enough evidence to proceed. DPP Alison Saunders announces his severe dementia means he would not be fit to stand trial.

May 2015 External QC is appointed to review the decision

June 2015 U-turn on Janner - he will be prosecuted Alison Saunders announces she is reversing the decision not to prosecute the former Labour peer for child sexual offences, following a review carried out by an independent legal expert.

June 2015 Alison Saunders faces calls to resign Director of Public Prosecutions Alison Saunders faces calls to resign after she was forced into a U-turn over her decision.

August 2015 Janner 'fit to attend court' Lord Greville Janner after appearing at Westminster Magistrates' Court in London (Picture: Reuters) Chief magistrate Howard Riddle rules that Lord Janner is fit to attend court to answer charges of historic sex abuse. Lawyers for Lord Janner later lose a High Court bid to prevent him from having to do so.

December 2015 Janner 'unfit' to plead in trial A senior judge rules Lord Janner is unfit to plead in a criminal trial over a range of sex abuse charges. Mr Justice Openshaw made the ruling after hearing details about Lord Janner's dementia.