But "Approach" could mean being at Swanwick! The best situation was when the Approach facilities were at the airfields but now many are at major centres. In those days you could see the planes and do the radar bit.
Bottom line is, do you want to see aeroplanes? If the answer is "yes" then you need to try and get to a tower facility.
If your love is radar then you need a centre, or one of the few remaining airfields which have both..
Scooby don't..... did someone call me?? :-))))