+1. I also tried Inner and Outer Hebrides, but figured they were chains of some type with individual islands whose names I do not know. Anyway, it was a learning moment.
The above is correct, what you've highlighted is 'Mainland', Orkney is the whole group of islands together. It's the same as accepting Outer Hebrides for Lewis and Harris.
- the areas you quote are hectares not sq. km (out by a factor of 100)
- the island labelled as Orkney is in fact called Mainland; Orkney refers to the entire island group, that includes Hoy in your list.
Only got 8, sad result for a Scotsman :(