Ok, thanks for the replies.
What about this situation:
The aircraft IS going to be doing aerial work. There is a CPL pilot and myself, an employee with a PPL. We are due to do aerial work over say the Isle of Wight, however we are based in XYZ. Can the 100 mile journey to the South coast for example be flown on a PPL as no aerial work is being done, we are simply transiting to a location TO undertake aerial work.