There are only 19 Owston Civets in captivity, Newquay Zoo, Shaldon Wildlife Trust, Thrigby Wildlife Gardens and Banham Zoo. Newquay Zoo has recently returned two males breed at the Zoo to the Small Carnivore Project in Vietnam. The project will be sending a new male to Newquay later on this year.
There is a facebook page for the project out in Vietnam, look for
Are you sure about Banham? I was there last weekend and didn't see any. Would be a shame to have missed them, though i have seen one recently at Thrigby & before that at RSCC.