I think above has summarised key points very well. I wouldn’t say there is a “best” vet school, and all current/past students will be pretty much biased in their answer towards their own school
Unfortunately it is very difficult to get into veterinary so it is rarely the case where you entirely “choose” where you go to past choosing the 4 you apply for, and then you can only see what you prefer out of what you get given, which for many is only one or two offers.
As above, some schools have different entry requirements which may impact where you can apply based on grades, but also (in pre covid times mostly) work experience. I am a reapplicant and for example last year I didn’t manage to get as much work exp, so couldn’t apply to some like Liverpool which usually require a higher amount. Another thing to consider is their application processes - a lot of people like the fact that Bristol do not interview (I personally don’t), some interview using panel some MMI, etc. Sometimes it is more of a case of where you can apply to maximise your chances of getting in too rather than preference, but that depends on circumstances.
For other preferences to think about could be whether you want to just be mostly with other vets or a mix of subjects - e.g. RVC has mostly vet related students, Nottingham’s vet campus is quite a while away from the main one so you will be living with mostly other vet students, whereas most of the other unis you are on their main campus for at least some of the time so can have greater interaction with people from other subjects and live with them. Consider whether you want a city or campus based uni, based in the city or in the countryside - some will have a mix of both, like Liverpool is in the city for 3 years then country for 2 years.
As a complete opinion of my own which many others would disagree with, I’d say personally I regard Nottingham and Liverpool as my top two, and the Scottish ones highly (though I do also agree that I consider them “harder” to get into) and Bristol is in there too. I think Harper Keele has a lot of potential to become a great vet school - I wouldn’t be put off just because it is new.