I did the ATPL(H) at Bristol last year and passed all first time.
I think they now do a dedicated H syllabus but at the time all H bods were in with the fixed wing crowd.
They split the exams into 2 modules and do PofF(H) in mod 2.
As you don't do performance there is plenty of time to revise PofF and on the middle Sunday you spend a day in the classroom with Mike Burton.
He's wrote a few books(!) and knows the subject inside out.
You'll find lots of info about Bristol on other forums but I certainly recommend them.