Two Met officers are under investigation by the Independent Office of Police Conduct (IOPC) for their decision in August 2024 to downgrade Levy from a high-risk sex offender to a medium-risk.
A police constable had been served with a gross misconduct notice and a detective sergeant with a misconduct notice.
The IOPC said it would be investigating how Levy was managed from his first conviction in September 2021 up to his arrest in September 2025.
“We are examining whether action could or should have been taken to prevent his reoffending, and if all officers involved in his management followed policies, procedures, and training.”
The IOPC stressed that the notices indicated the officers’ actions were under investigation and did not mean disciplinary proceedings would follow.
The investigation will also consider whether any lessons can be learned or changes introduced at an individual, force-wide or national level.
The British Transport Police (BTP) said that two of its officers have been moved to other roles due to their “incompetence” in handling the case.
BTP Assistant Chief Constable Charlie Doyle said: “It is clear that opportunities to expedite the investigation were missed and we have amended our procedures to address these issues to ensure that repeat offenders are dealt with expeditiously, and that linked offences are prioritised more effectively.”
Doyle also said it was possible there are other victims of Levy who are not yet known and encouraged them to come forward.