In reply to mim tiller:
There are very active clubs I know of personally at St Andrews[1], Edinburgh[2], Dundee[3], Glasgow[4] and Abberdeen[5]. I would be amazed if any Scottish uni didn't have a busy club, many have two, one a mountaineering or climbing club, the other a hillwalking one.
The clubs are different of course, some are all about rock climbing, some like their ice, some have a mix of all disciplines. Some are well behaved, some are alcohol soaked disasters that give the rest of us a bad name.
All clubs change with time too, as people join and leave, so what is a lively club now might not be so much so in a years time.
Assuming you're doing something worthwhile like a science degree[*], pick a subject, and apply to a couple of different unis with a spread of typical offers around what you think you'll get. Then start visiting them to decide where you're spending the next 4 years of your life.
[1]
http://www.staumc.co.uk/
[2]
http://eumc.eusu.ed.ac.uk/
[3]
http://www.durc.org.uk/
[4]
http://www.gumclub.co.uk/
[5]
http://www.abdn.ac.uk/student_societies/lairig/
[*] what? Me? Trolling? Never.