Law is one of Exeter's better, if not best, subject(s), but to my knowledge it's still considered "semi-target" by e.g. MC firms and similar, and the progression to such firms is lower than comparable other RG universities. Of course there can be many reasons for this (it's inconvenient location relative to London for assessment periods and networking, and fewer firms attending the universities on campus careers events possibly due to the location or otherwise) but the fact remains.
Warwick (and Oxford, although I'm not sure where this cropped up in the thread) are of course heavily targeted by such firms, and probably the primary goal. I'm not so sure about Manchester and Surrey - my impression is that Manchester overall has greater prestige attached to it, albeit not specifically for Law, although Surrey is fairly conveniently located relative to London.