[kitd]

Small quibble: the Isle of Man, Guernsey and Jersey all have "(UK)" appended. They are not actually part of the UK, but British Crown dependencies. Possible confusion (as with most things British and overseas).

[sengifluff]

I think you may have misunderstood the meaning of the brackets. The key says this means “dependency or area of special sovereignty”.

[kitd]

You're correct. I didn't spot the legend.

[jll29]

The " (UK)" appendix roughly indicates who would come to protect them in case somebody else tried to invade.

The channel island Jersey, for instance, more correctly "The Bailiwick of Jersey", is an autonomous and self-governing island territory of the British Islands. It is a British Crown Dependency with an independent local gouvernment, but not a sovereign state.