I own a Claud Butler from the 1950's (it was originally my father's). I've been trying to track down some more information about which model it is, and I think it is a "Club International". I wonder if anyone can confirm that? I've put some pictures of it the bicycle here:
The rear mudguard claims it is a "Club Special". There are also Olympic Rings painted on the frame (which made my thing originally that it might be an "Olympic Sprint", but the specification more closely resembles a "Club International").
If of use, you are welcome to use the photo for the Claud Butler section of the Classic Rendezvous web site.
Nigel John, Chester, UK
(new to this list)