Physics and/or maths at Glasgow, Edinburgh and StAndrews. The other two I haven't yet decided, but it is between Dundee/Aberdeen/Strathclyde/Heriot-Watt.
I want to do physics, but I got a B at higher so I might apply for maths at Edinburgh and St Andrews as I'll be more likely to get in and can still end up doing a joint degree, which will suit me anyways because I love maths also. I'm going to write my personal statement as if I were applying to a joint maths/physics degree, I think.