Announcement was made in a written statement on Saturday, and writer source says the vaccines were administered by a household doctor at her Windsor Castle residents.

The queen is 94 years old and her husband's 99 the source says.

Queen Elizabeth made the information public to counter any speculation.

Earlier last year, her son, Prince Charles, tested positive but at mild symptoms.

It wasn't immediately clear which vaccine the queen received.

The UK has approved the use of both the Pfizer beyond tech vaccine as well as one made jointly by AstraZeneca and the University of Oxford.

It has been rolling them out to the most at risk elderly.

The UK was also the first Western country to start mass vaccinations back in early December.