The Virgin Group founder accidentally hit himself in the mouth with a tennis racquet while recently competing on the court at his Moskito Island resort in the British Virgin Islands.

Recalling the sporting incident on his website, he wrote, "The early morning sun was beating down. The sweat was dripping off my brow. I stood at the base line line on Moskito Island's tennis court, racquet in hand. I was set point down, determined to win the point to keep me in the game.

"I hit the ball hard to my opponents left, he scrambled a return. As he moved into the net, I moved in for the kill...

"No, I didn't smash the ball over the net for a glorious winner. I went for a lob... and somehow ended up smashing my two front teeth with my racquet! I've heard of tennis elbow, but this was tennis teeth."

Sharing a photo of his damaged teeth, he added, "It was not pretty."

He then posted another image of his fixed smile after receiving emergency dental treatment.

"Thankfully, there was a wonderful local dentist (Dr Garfield Neita) who quickly had a smile back on my face," he explained. "Next day I was back on the court, getting my revenge by beating our resident tennis pro."