Fdomenella, the application process for 'direct entry graduates' is very different from the ATCO process. The NATS careers site provides more detail, specifically this page
http://natscareers.co.uk/careers.asp?c=2&s=9
and this one
http://natscareers.co.uk/careers.asp?c=2&s=9&a=30
Best of luck
,
Nokio.