Thats not round Britain. He went round each of the individual islamds seperately. A great idea for a dinghy sailor. It would take him years and years if he added Scotlands islands There’s a heck of a lot more than in england and wales.
Someone will do it at some point though.
Think your title needs correcting. Unlike the guy in a Laser (and at least one on a Stand Up Paddleboard) the article says this was round islets in England and Wales, not “Round Britain”.