CB9002... Eurocontrol's is a bit faster.
I applied to NATS in October (2001), and got Aptitude Testing just before Christmas.
I applied to Eurocontrol in November, got Aptitude Testing at the beginning of December, Interview in mid January and offered a start date of March (2002). It was only after that that I heard back from NATS re. their tests! I was offered an interview, but unforunately couldn't attend as I was in Luxembourg at the time...