To answer the question - they use an abridged version of Bristol's notes, which means they are very good. On the other hand, they appear to have trouble getting instructors and paying them (they even asked me, but long years in charter have given me a bankruptcy warning system). I know a couple of people who said they wished they'd stayed at home and just studied the notes, but the classroom stuff is compulsory. I know that's officially hearsay, but they are people who already have ICAO ATPLs and are very experienced.
To answer another question, the CPL(H) theory is of a higher standard than CPL(A).
Phil