The Duchess of Cambridge has been forced into self-isolation after coming into contact with someone who subsequently tested positive for coronavirus, Kensington Palace has said.

She was alerted on Friday afternoon and began isolating immediately.

The Duchess, 39, was at Wimbledon on Friday, although she left earlier than usual, after watching one set of Dan Evans’s match on Centre Court.

The Duchess took lateral flow tests before her engagements at the Euros and Wimbledon and both were negative, royal aides said. She also followed the rules throughout Wimbledon about when to wear a mask. 

She is understood to test twice weekly with lateral flow tests as part of the Royal Household testing regime and has had both vaccinations.

The Duchess was also at the Euros last week with Prince William and Prince George

Credit: Christian Charisius/DPA/Cover Images

A Kensington Palace spokesman said: “Last week The Duchess of Cambridge came into contact with someone who has subsequently tested positive for Covid-19.

"Her Royal Highness is not experiencing any symptoms, but is following all relevant government guidelines and is self-isolating at home."

It means she will not be able to attend the service of thanksgiving  for the NHS at St Paul’s Cathedral today, as scheduled, or join the Duke for an NHS Big Tea at Buckingham Palace.

It also means she may not be able to present the Wimbledon trophies this weekend, which she did for the first time in 2019, as patron of the All England Tennis Club.