Prince Harry’s security arrangements while in the UK are being reviewed by the government, according to reports.

Harry wrote to the home secretary, Shabana Mahmood, shortly after her appointment and submitted a formal request for a risk assessment to the Executive Committee for the Protection of Royalty and Public Figures (Ravec), which is overseen by the Home Office, a source close to the prince said in October.

The Home Office has now ordered a threat assessment for the first time since 2020, the Sun reported.

Harry lost an appeal in May against the dismissal of his high court challenge to the Home Office over Ravec’s that he should receive a different level of taxpayer-funded protection when in the UK.

The legal challenge came after Harry and the Duchess of Sussex left the UK and moved to Canada, then California, after announcing they wanted to step back as senior royals.

Harry said the court of appeal decision meant it was “impossible” for him to bring Meghan and their children, Prince Archie and Princess Lilibet, to the UK safely.

Ravec has now instructed its risk management board to reassess his threat level, according to the Sun. The newspaper reported that the process was under way with a decision expected next month.

A government spokesperson said: “The UK government’s protective security system is rigorous and proportionate. It is our longstanding policy not to provide detailed information on those arrangements, as doing so could compromise their integrity and affect individuals’ security.”

During Harry’s previous visit to the UK in September, a “known stalker” came “within feet” of him on two occasions, according to the Daily Telegraph.