Yes, the Carlton organ was a Christie and a very good one at that. They were built by Hill, Norman and Beard and I am told that they used the name 'Christie' for their cinema organs as they didn't want to use HNB on cinema organs. There was always a lot of snobbery attached to this matter. My music teacher tried to discourage me from getting involved with the cinema organ as he hated them. I am not sure how the Carlton's organ sounded when it was in the cinema but it certainly sounds great in its present location. The percussion is the loudest I've ever heard on a cinema organ!