Weren't they rebuilding another in Herts? There are a few in museums, but according to wikithingy, the Yanks have the only flyer and that was built in Canada. Mind you, I often fly in Canadian built De Havilands, with 2 propellers but no bomb bays
There are2 flying mozzies, one built from scratch recently in New Zealand, i believe now owned by Jerry Yagen. And 1 in Canada.
Recently announced that the Vulcan to the sky and "The peoples mosquito" may be joining forces, as well as the crew at Biggin being hired to restore one, so potential 2 mosquitos flying in the uk soon.