Thanks very much for the feedback, Daifly,
I think I figured most of this out
The argument about trial lessons etc. only seems valid for a company that doesn't have an AOC. I believe the company in this case has one so what I don't understand is that the company must have all of the required public liability insurance to handle commercial flights so what is the difference between the CPL picking up the paramedic from the field vs. the same pilot picking up the same person from (e.g.) a hotel in the country and taking him to the same airport. The latter is something that helicopters do all the time ?
Cheers,
John