Apparently, I Don't Know Jacks

TFR and I were just watching an episode of one of Rachel Ray's 1,294 shows, $40 a Day, I think, and she was in Antigua. At one point she approached a young man with a very Commonwealth sort of accent, and asked him for lunch advice. His boat had an interesting ensing -- obviously from somewhere very British, but I can't figure out from where. It wasn't Gibraltar, Malta, Bermuda, The Bahamas, Antigua, Nevis, St. Kitts, or the British Virgin Islands. I'm hoping someone (maybe my Tory friends at the Llama Butchers) can ID it for me. It was a red ensign with the Union Jack in the upper Left. In the main area of the red field was a yellow cross, with equidistand arms, thin and square.