Ah to be 14 again.....
Commercial pilots in the UK do one or more of the following:
Instructing
Scenic Flights
Air Taxi (or Charter)
Police
Air Ambulance
Offshore (flying out to the North Sea Oil Rigs)
Photo/Traffic Reporting/Journalism
Load Lifting
Plus a whole lot more including Search and Rescue.
There is no reason why a civillian trained pilot cannot do any or all of the above. However it is very expensive, time consuming and risky to fund it all yourself. Look very seriously at joining the forces and get the Queen to pay for your flying training. All the above would be available to you if/when you decided to leave the forces (although you would have to do some converting to the civillian system. Others will be able to extoll the virtues of military training, but I would imagine the place to start would be your local Air Training Corps.