I wish you all the best young man in your pursuit to become an Air Traffic Controller but my tuppence worth is a degree will not make you an ATCO. I went through NATS 20 years ago and most of the students with degrees failed the course/OJTI. They assumed that the 'college' was just like Uni, pissing it up against the wall every night and cramming before an exam, it does not work. Of course you need an ability to do the job but if you have that and serious determination you will make it. Good luck!