Bravo-Papa,
Your first post said you wanted to fly aero competitions in due course. I assume from that you will look on flying as a sport not a possible alternative career. Good, more people in competition are always welcome and you will find that it really is the only way to fly but you have to get there first.
If this is your goal do not learn on a C150 or a PA-28. Instructors on these things tend to be the 'straight and level' CPL type although there are honourable exceptions. Learn on a Cub or at least a tailwheel aeroplane. It is worth the extra money and trouble to go and find one.
Given your objective, and your location, give the Tiger Club at Headcorn a call and see what they can do. If you like it you could not be in a better place to go on and learn aeros and how to really fly, not just operate, an aeroplane.