AI isn't necessarily a bad thing, it's just that the course changes so often that what you read won't be what you're taking. In my first year we were told to pick three options for our second year, only to find out that the university had removed every option and replaced them all with AI modules. This year three out of six of the final-year modules are AI as well.
Personally, if you have the chance to go somewhere better I'd jump at the chance, but if you're set on going to UWE I'd still choose the CS course over the far more flexible Computing option, simply because CS is accredited and every employer will recognise your degree.
Throughout your time at UWE you'll get to use languages like Perl, PHP, Prolog, C and Assembly Language; regardless of this your main language will be Java and you'll be expected to be proficient in it. UWE is one of those "Java Schools", a term employers give to universities that teach you little theory and lots of programming. You'll save yourself a lot of time if you start practising your Java now! Pick up a large, recent Java book second-hand and spend a part of your summer going through it and you'll have at least a year head-start over others as the first-year work is extremely simple in order to bring everyone up to standard.