Having some knowledge of several of the universities you mention, they are all pretty good.
However, if you want to go into Clinical Psychology, you will need to have experience, and the course at Surrey has this built into their 4 year programme. One of the biggest problems with a standard course is that it is very hard to gain direct experience with psychologists, but any course that has a sandwich component and links to clinical psychologists are more likely to lead to you having a placement in a psychology service.
This can be incredibly helpful when it comes to gaining experience and making contacts and is often overlooked by undergraduates in favour of things like university prestige etc. The irony is that in the world of clinical psychology you may get further, quicker, if you attend somewhere like Surrey or Bath (which offer 4 year courses with placements) rather than Oxford or UCL (which don't).