She explained to officials at the time: “Louis was very upset he wasn’t coming today!” before adding: “They’ve been eagerly watching. Charlotte, you’ve been getting to grips with the scoring.”

The Princess’ parents, Carole and Michael Middleton, and her younger siblings, Pippa and James, are also heavily into the sport, and have all accompanied her in the royal box over the years fuelling speculation that Kate could join them for a last-minute appearance.

Kate previously spoke to Sue Barker about her love of tennis in a 2017 BBC documentary. She said: “I have watched Wimbledon, that was very much part of my growing up. It’s such a quintessential part of the English summer, and I think it really inspires youngsters, myself, it inspired me when I was younger to get involved in the game. It hasn’t changed either, I think that’s what’s so wonderful.”