She suggested that public figures including the Queen could be used to help build trust in a vaccine.

The expert, who leads the Vaccine Confidence Project, said: “If there’s one thing I’ve seen, and I’ve been here [in the UK] for over a decade now, it’s the trust that she gets.

“I think the Palace is going to have to decide for themselves - do you want to risk a new vaccine on the Queen.

In July, a YouGov poll suggested that 10 percent would not get a coronavirus vaccine and 20 percent were unsure.

But up to 80 percent of people would need to have the jab to reach herd immunity.

Queen heartbreak: Will Queen miss key royal moment? [ANALYSIS]

Commenting on the current coronavirus situation, the Queen said: "It's doubling itself again."

But the Queen sparked criticism from some after opting not to wear a face mask