I've watched 20 episodes of the Real Hustle (uk), and seen the movie Braveheart at least 10 times and still believe this accent is the most difficult to imitate out of all the accents in the entire world. Have you ever attempted this challenge? I double dog dare you to try it!
Far be it from me to shay otherwishe but I'm shor that thair may be othersh which you're dishcounting premichurly.
Nah, just start of with Jamaican and if you're terrible it'll veer right into aye, sure and ah choy choy choy.
Scottish definitely isn't the hardest. In fact, it's one of the few foreign accents I can do somewhat convincingly. I could probably do a decent Sean Connery impression if I wanted. Funny thing, I actually get people randomly thinking I'm from Scotland, Ireland, or England on occasion despite being born and raised in Tennessee. I never really understood why.
I attempted the challenge and it went quite well. I am Scottish though so I kinda feel like I Lance Armstrong'd it.