As above - the cities are very different in size and flavour.
In terms of the Unis themselves they are also very different.
Bath is a modern campus Uni, and relatively small. Its built around a small lake, and on the top of a hill surrounded by English countryside. The Uni specialises in science/technology and business subjects, so you would find lots of other science-heads at Bath. It is one of the training bases for the GB Olympic Team, and therefore has some of the best Uni sports facilities possible - and even if you are not especially 'into sport', there is still a whopping great swimming pool for a lazy Sunday afternoon swim. Library is open 24/7. It has about 14,000 undergraduate students.
Glasgow is a much older University - most of its buildings were built in the 18th/19th century. Its spread out across the centre of Glasgow, which is a large built-up city. This means much more traveling between buildings and facilities than at Bath. It teaches all subjects, and has a Medical School etc. It has about 24,000 undergraduate students, over 40% of them are from that part of Scotland.