I've seen Butley and found it totally enjoyable. It's more than a filmed played including shots of Bates at an undergroud station and riding in a smoking carriage. Bates is also seen entering Queen Mary College, Mile End Road, and later crossing that road heading for the pub opposite the college. There are also a few internal shots, presumably Queen Mary College, of Bates and others in a hallway. There may be some other shots too but I cannot recall at this moment. The bulk of the film is in Bates' office which is a studio set. I haven't seen the other films you mention.