Not just the CAA but the whole debacle known as Joint Aviation Requirements Flight Crew Licensing Part 1, soon (ish) to be replaced by EASA's EU Regulations.
If you are on an integrated course then you simply do the ATPL Theory but you are not issued with a PPL, only a CPL IR.
The Modular route requires you to take one step at a time, PPL, CPL, IR, and for PPL issue you need to complete the PPL theory exams.
