I'd recommend EE for best coverage over here, I'm on Vodaphone and get great 4G in Edinburgh but fuck-all (some local patter for you there) in Dundee, Stirling, and St Andrews.
Hope that's some use, best of luck to your daughter at uni - I'm sure she'll love it.
My problem lies in reconciling my gross habits with my net income. -- Errol Flynn Any man who has $10,000 left when he dies is a failure. -- Errol Flynn