The Home Secretary Priti Patel has requested a follow-up report into the botched investigation of false sex claims made by fantasist Carl Beech.
New publications from a 2016 review said the main cause of the Metropolitan Police's disastrous Operation Midland was “poor judgment and a failure to accurately evaluate known facts”.
The report from former High Court judge Sir Richard Henriques also said a “major contributing factor was the culture that ‘victims’ must be believed”.
Carl Beech, formerly known as Nick, fabricated accusations of a murderous VIP paedophile ring in Westminster.
It placed false blame on victims including D-Day veteran Lord Bramall, former Home Secretary Leon Brittan and former Conservative MP Harvey Proctor.
Beech was jailed for 18 years in July for perverting the course of justice and fraud.
Ms Patel has now requested a second report by the Inspectorate of the Constabulary to “ensure the necessary improvements have been made and continue to be made”.
Met Police Director General of Operations Steve Rodhouse, who headed up the failed police investigation, said he is "sincerely sorry for the distress that has been caused".
However, Daniel Janner QC, son of falsely accused former Labour MP Lord Janner, has called for more to be done.
He told talkRADIO’s Mike Graham that Ms Patel’s letter to the criminal justice inspectorate is a “good first step”, but said he, his family and those in the legal profession want an inquiry led by a judge who is “impartial and neutral”.
Mr Janner said: “This isn’t just about important people VIPs it’s about everybody.
“Everybody is entitled to have faith in a fair criminal justice system and not where bizarre, wholly ridiculous claims are accepted as being true.”