Of course until recently there was Hong Kong with the Edward Youde Aviary species list here,Hong Kong Zoological and Botanical Gardens (which are mainly botanical) and Ocean Park which is a theme park but has some zoological attractions including giant pandas in an indoor climate controlled building.
Of course there is also the Isle of Man with Curraghs Wildlife Park and most significantly Jersey which aren't Overseas Territories but aren't intergral parts of the United Kingdom either.
British Dependancies Isle of Man
Curragh's Wildlife Park
Jersey
Durrell Wildlife Preservation Trust
Can't find any zoos for Anguilla, British Antarctic Territory, British Virgin Islands, Falkland Islands, Montserrat, Pitcairn, St Helena, South Sandwich Islands and Turks and Caicos Islands.
You may find this useful Catman
Wiki list of zoos
[ame=http://en.wikipedia.org/wiki/List_of_zoos]List of zoos - Wikipedia, the free encyclopedia[/ame]
really helpful guys
Do we still rule cyprus?
dowt their are any on monseratt, Antartic territory, Falklands islands (only 3000 people, dad says thes eare a lovely bunch of people, he faught in the falklands war) or piticairn (only 90 peeps)