There's also a CCG 4. which features Reg Owen's Big Eight (composers include Harold Walden, Art Noel, Max and Harry Nesbitt and Jack Stodel, Jay Wallis, Maurice Sigler and Al Hoffman and Al Goodhart), and a CCG 6 also featuring Reg Owen's Big Eight (composers include Colin Fay and Larry Stein, Mack Gordon and Harry Revel)
These were also issused under the BBC Coded Music Scheme as CM 39 and CM 135.
I don't have any more details on these, the above info comes from track listings for BBC test card tapes that used some of the tracks