On September 9, the woman was allowed to enter a 'secure zone' at a hotel in central London where the Duke of Sussex was present for the WellChild Awards.
It is understood that senior Met officers 'acted on their own initiative' to offer him protection while he was in the capital (pictured) for the WellChild Awards.
The Duke of Sussex chatted with singer Joss Stone during the WellChild Awards at the Royal Lancaster Hotel in London on September 8 during his four-day trip to the UK.
In a post shared to Instagram on Tuesday, the Duchess of Sussex, (left) 44, reposted a clip of Harry, 40, (right) sword fighting at the WellChild Awards on Monday night.
Prince Harry appeared to be back to his old 'fun self' at the WellChild Awards last night in London, delighting youngsters with a cheeky balloon sword fight and sharing 'dad jokes' with teenagers.
Molly-Mae Hague looked chic in a black suit as she rubbed shoulders with Prince Harry at the star-studded WellChild Awards held at the Royal Lancaster Hotel on Monday night.
Prince Harry joked and laughed as he chatted to Declan Bitmead, 17, about the relationship between siblings, during a reception with the WellChild award winners ahead of the presentations in London.
Prince Harry delighted youngsters with a cheeky balloon sword fight at the WellChild Awards just hours after a solemn solo visit to his late grandmother's final resting place at Windsor.