With the safari parks, Longleat has been trying to breed theirs, and knowsley has bred them in the past and still does I think.
I presume you're talking about white rhinos here, not Zoo Cafes.... On a slightly different topic(still Rhinos though) your picture of the Edinburgh Indian rhinos was good. I think you'll find they are playing, (or playfighting), rather than fighting though, as they are still only 'babies' really. I believe this is the same paddock their White rhino pair lived in, but with improvements, such as new pond etc.