St Helen's is an uninhabited island in which of these groups?

Proud American, it's pronounced "Silly" and are mostly referred to as "The Scilly Isles" rather than "the isles of Scilly".

Wow, interesting. Never heard of the Isles of Scilly. I actually assumed that it was a typo and chose a different (and therefore wrong) answer. Learn something new everyday playing this game.