Cloud 69 is right by stating age limit 30 but previous miltary/civil atc experience will be considered above that. It has been known for people to commence at the college 40+.
Whether you are 18 or 30 with experience. Recruitment will treat both the same, its down to the aptitude tests and how you sell yourself, and whether you are capable of studying enough to pass.
If you are keen and motivated you are halfway there.
Bear in mind though...NATS recruitment this year has virtuallycome to a standstill and the whole process at present fram the 1st application form to starting at Bournemouth is about 2 years, as courses are full to Oct2004 and filling Jan2005!
With regards the salary..noone quibbles as you also recieve accomodation allowance totalling £100 per week(tax free) leaving you to spend the rest on the important things in life!
All the Best...A great career when you get there