Mick Clarke, chief executive of the Passage, said Prince George had come when they were preparing Christmas lunch for 150 people.
“So it was really about, ‘Are you ready to roll up your sleeves and get stuck in?’ And he very much was,” said Mr Clarke.
“Very much like his dad, actually – just wanted to get stuck in and help,” said the charity chief.
“A lovely kid is how I would describe him, and he just really seemed very interested in the work that we do and particularly in talking to people who have used our services,” said Mr Clarke.
There was some competition between father and son in getting the food ready.
“William was on the sprouts, getting his sprouts ready so they could go into the steamer, and Prince George was helping with the Yorkshire puddings,” said Mr Clarke.
He described the signing of the book with Princess Diana’s name as a “lovely, beautiful moment – I think particularly with Prince William pointing out to George, ‘This is my mum’s signature. This was the first time that she brought me here.’
“It kind of felt full circle, really – 1993 through to 2025, with William bringing George,” said Mr Clarke.
The charity head said it seemed as though Prince George’s family were trying to show their children life outside the palace and how it was important that “the most vulnerable in society are supported and looked after”.
And in terms of contrasts, the visit to the homelessness charity came on the same day as the annual Royal Family Christmas lunch in Buckingham Palace.