Hi,
Thanks for the responses.
I currently have a Commercial Licence and the Flying Club/School I use is registered for Flight Training and Charter operations. In that respect myself and the aircraft should be covered.
I guess the problem(s) is/are that it seems too easy to just hire an aircraft, take someone up with me, and take photos. I could, and probably should, ask the flying school but I'm not sure how receptive they would be to me making money whilst using their aircraft. The other factor might be insurance and whether I would still be covered under the school's insurance.
I'll have to have a discreet word with one of the instructors and sound them out.