Apologies for not having made it obvious. I'm a trainee ATC on Stage #1 of the application for NATS. I want to visit a tower so I can get a taste of my future experience. I'm trying to do this as early as possible as I rather go see a tower before I become too busy with the application/college.
I'm going to take some advice from the lovely posters above and see if I can arrange a visit to Luton (which is relatively far compared to the other options) or if NATS could hook me up with a visit.