Lord Janner is now likely to be prosecuted for historical child sex offences, according to reports.
The decision would overturn the Crown Prosecution Service's decision in April not to pursue the Labour peer.
This would pave the way for evidence to be tested in a criminal court in a "trial of facts". One Labour MP suggested that Alison Saunders, the director of public prosecutions who said in April 2015 Janner, 86, could not be prosecuted due to his advanced dementia, would have to consider her position.
Simon Danczuk, the MP for Rochdale who has campaigned for a trial of facts, told the Guardian: "I am pleased to hear the suggestion that Janner will finally face justice: the alleged victims deserve this. The allegations against him are horrific, and we need to hear the facts before a court.
"All suggestions are that Saunders reached the wrong conclusion in April and this is not the first time she has made a major mistake, She has struggled in some of her decisions to pursue journalists through the courts, too. Her job is all about judgment,".
The peer's family have insisted that Janner is innocent of all wrongdoing.
A Leicestershire police investigation into Janner interviewed dozens of alleged victims who claimed they had been abused by Janner in the 70s and 80s. The Crown Prosecution Service concluded there was enough evidence to prosecute him for 22 offences against nine people.