Hi Chopertop
The IR(H) exams are the same as the IR(A) i;e its not A or H specific and there are no questions on POF.
So for the IR theory I used the ATPL(A) question bank for the relevent exams, I only used the question bank for air law, HPL, Met and IR comms.
There will be questions on the ATPL(A) queston bank that do not apply for the IR exams, some of the local winds in the met exam which are relevent for ATPL are not relevent for IR also there should be no questions on FMS at IR level, however the CAA do keep putting some of these questions in the IR exams, your ground school course provider will be able to tell you whats relevent and whats not, if you do get non relevent questions in the exams answer them but appeal against them, I had 4 questions on FMS in the systems exam which were all credited.