I happen to have a slight Scottish accent, despite never having lived there (or in any other country where English is the dominant language, for that matter.)

Reason is simply that when I was a kid, the house next door - the only house next door, this being rural Norway - was purchased by a family from Aberdeen, who'd decided to move to Norway to try something new.

If I wanted to play with their kids, I'd better learn some English fast - and the only speakers around were the Scottish kids next door.

Incidentally, I now go to Aberdeen for work on a regular basis, and the locals never fail to ask how long I've been living there, seeing as I've started to pick up their accent and all...