A quick use of a popular search engine seems to indicate that the CAA do authorise a CPL (H) integrated course and a few different places offer that service.
Castle Air, Phoenix Helicopter Academy, and Aeromega, all come up on the first page of results. As for each of their reputations, I don't know. A phone call to them may well find your answer.
With the relatively low popularity of the CPL(H) compared to the CPL(A), I can't imagine there are many options out there.