Mechanical at the Robert Gordon university.
There wasn't really anything extra curricular that I could have done to do with engineering, to be honest, and I don't know if universities really give a damn about your personal statement for engineering. My personal statement was pretty crappy, really. Just reworded an example I was give by a teacher, and mentioned that I used to play with Meccano when I was younger.
And no one rejected me (I applied to Edinburgh and Aberdeen as well).
Might be different for English unis, though.