Well firstly I think it's important to highlight that at the moment you have to do another subject with law for two years (something I wanted to do personally). But in the third year you can take the LLB.
Honestly it's not a top 20 Law school at the moment, this year it the university as a whole went down in the Times rankings, it was ranked 31st two years ago. Nevertheless the Law school is in my opinion pretty good, there is some top lecturers in their areas, and in the 2001 RAE it received a A* for the department (ok this was 6 years ago but only 5 other law schools gained this mark.)
Ive found it relatively easy getting vacation schemes etc, albeit in Cardiff not the City and I think there is some top lawyers from Keele (The president of the Law society went there)
In my two years of experience I've enjoyed it, then again I have no wish to join a top London law firm; remember it is on a hill in the country side nothing at all like a city uni and maybe if it was in a better location it would be a lot more popular.