If you don't wish to instruct but you want to stay in Britain then the alternatives are slim. (I don't know the UK GA scene very well).
You could try glider towing or meat bombing (parachute drops) however, I believe the chances of being paid are slim. You could try air taxi work but I think the company regs/insurance requirements require a few more hours.
Now, if you are prepared to travel, I would suggest Africa (pick the locations carefully) and get into a scenic/charter operation.
That's the sort of thing I did in Australia.