Of those universities then Manchester, Warwick and Leicester are, in my opinion, the strongest. Sheffield and, to a slightly lesser extent, Liverpool are also solid choices. Hull, Kent and Sussex do serve as decent back up choices for an AAA-AAB candidate. All three are decent, Hull being the stronger of the three in my opinion.
In terms of location then: -
Warwick
It's a campus based university, located on the outskirts of the city of Coventry. Some will say it's "in the middle of nowhere" but I don't think this is true at all. It's only 20 minutes or so by bus to Coventry. I don't really like Coventry as a city myself. It saw some terrible bombing during world war 2 and its architecture suffered. It suffered a fair bit from neglect during the 70s and 80s. But the university has an excellent reputation and the law school is, in my opinion, just outside the elite (and alongside Manchester and Leicester). It also has a fairly large international community with quite a diverse student make up.
Manchester
One of the student capitals of the country, it's a large and vibrant city. The university is based in the city itself. Manchester is a city growing in size, strength and international repuation. Its law department has also pulled away from many of the other redbricks (Victorian, redbrick style unis that traditional focussed on science and engineering) like Sheffield, Leeds, Liverpool and Newcastle. Bristol is the one redbrick that most people would see as an elite law school. Manchester and Birmingham, however, have pulled away from the other redbricks and probably nestle just outside that elite.
Leicester
Campus based, quite a pleasent campus. I'm not really a fan of campus based universities but I do like Leicester's. The university has a growing reputation and so does the law school (which, in my opinion, matches the strength of any of your other options). It's not as large as Manchester, Sheffield, Warwick or Liverpool. In my opinion it's the ideal size, but this is just my opinion.
Hull
Hull is a university that, amongst the general public and some students doesn't have a great reputation. However, I wouldn't let this put you off. Most people are quite prefudiced and, as Hull itself is quite an unfashionable city (it does have some great deprivation in a number of areas) they think the university must be rubbish. This is not the case at all, Hull can pack a punch and the university has some great strengths (philosophy, politics and, importantly for you, law). Employers and people a bit more clued up may not express that same ignorance.
That campus is based in between the city and a large village/small town (it claims to be the largest village in the country, but even this is misleading as it is a fair size). The campus' location is semi-rural to urban.
Sheffield
Sheffield is a city based university. Sheffield itself is a major city and seen as a good student city. I'm not a great fan of it myself, it's quite an uninspired city architecturally. However, it is quite green and you do have a National Park on your doorstep (the Peak District). I think it's the only city in the country to include a National Park within its city boundaries so it may be a great choice if you want some great countryside nearby. Just briefly going back to Manchester, it too isn't far off some good countryside (both the Peak District and, further afield, the Lake District) but you'd usually need to travel by car or train. The Peak District still isn't as accessible from Manchester as it is from Sheffield.
Sheffied university is a solid "redbrick" (Victorian, redbick style" ) uni and its law department is just that. It's a solid department with a fairly good reptation. It does not excel in law, however.
That's it for now, I'll try and give you more info about Leicester's campus and the (rather limited) knowledge of Kent and Sussex later on.
Edit: -
Have you checked out the university comparison sticky in the law subforum?
http://www.thestudentroom.co.uk/showthread.php?t=88536
Also, I've just moved your thread to the law forum. Hopefully you'll get the specialist knowledge you deserve.
University course discussion for law.
Useful Resources:
Law School Picks for 2009
Personally, I would put it above Kent, and possibly Hull? I'm not positive though!
