Charles, the record, UIM No. 3446, is correctly known as "ROUND BRITAIN AND IRELAND" (class long distance offshore), but is generally referred to as Round the British Isles, although this can be a little misleading as you have noticed.
Rupert, I'll ask Louise to mention your query to Chris and make sure that he refers to this in his
Riblines article about the record breaking trip. You'll have to join BIBOA of course to read the answer!