The Queen is said to be in "good health" and is still following all appropriate guidance after her son and heir was diagnosed.
Prince Charles has tested positive for coronavirus.
Clarence House confirmed that the 71-year-old heir to the throne was diagnosed with the COVID-19 disease in a statement released this morning.
The royal displayed "mild symptoms" on Sunday and was then tested on Monday, with the results coming through late on Tuesday night, the statement said.
Charles "otherwise remains in good health" and has been self-isolating in Scotland with the Duchess of Cornwall, who has tested negative for coronavirus.
"The Prince of Wales has tested positive for coronavirus," the statement said.
"He has been displaying mild symptoms but otherwise remains in good health and has been working from home throughout the last few days as usual.
"The Duchess of Cornwall has also been tested but does not have the virus. In accordance with government and medical advice, the Prince and the Duchess are now self-isolating at home in Scotland.