Which Zoo's in the country have them, as the major ones I knew of have gone...
Chessington, Knowlsley, Flamingoland, National Seal Sanc., Longleat, West Midlands....there are quite a few others but I can't remember off hand. I think a while back we counted around 18. Some zoos have recently got rid of them though, like Woburn.
EDIT: (Copied from the another thread)
California sea lion:
Blackpool (Zoo)
Chessington (World of Adventures - bis 1987 Zoo)
Dunstable (Whipsnade Wild Animal Park)
Ilfracombe (Combe Martin Wildlife)
Longleat (Safari Park)
Stirling (Blair Drummond Safari Park and Adventure Park)
Belfast (Zoo)
Colwyn Bay (Welsh Mountain Zoo)
Malton (Flamingo Land)
Cleethorpes (Pleasue Island)
Lowestoft (Pleasurewood Hills)
Knowsley (Safari Park)
Bewdley (West Midland Safari Park)
EDIT: National Seal Sanctuary have 1.
Patagonian sea lion:
Colchester Zoo
Gweek (National Seal Sanctuary)
Twycross Zoo
Dudley Zoo
Edinburgh Zoo
South African fur seals:
Diss (Banham Zoo)
Bewdley (West Midland Safari Park)
Rhyl Seaquarium
South American fur seals:
Torquay (Living Coasts)
Bristol Zoo