I was at CTC phase two yesterday in Bournemouth, and the staff there stressed heavily that the course was integrated and not modular. Whether this is just for courses starting in the near future, has already been enacted or has been the case for some time I don't know, but if you are currently going through the application process and have yet to start you are likely to be going into an integrated course rather than a modular one.
[Edit] At what point do you need to have your Class 1 secured in the application process? Do CTC expect it before stage 3?