ROYAL aides are ‘concerned,’ fearing that the Queen’s limited mobility may limit Her Majesty’s public engagements.

Angela Levin, a royal biographer, told Sky News that Her Majesty’s absence may have an influence on audience numbers.

“I believe the aides are anxious that if the public doesn’t see her, people would say it’s not worth visiting if she’s not there,” she added.

Angela Levin also stated that she believes Prince Harry would not travel abroad to commemorate his grandmother’s reign.

“It’s pretty terrible to watch him,” Ms Levin remarked. She [Her Majesty] would be delighted to see him. Harry is her absolute favourite. It does not appear to upset him.”

Since leaving the firm, the Sussexes are no longer eligible to royal protection, and the UK Home Office has refused to pay for private police security.