If that is true, and I sincerely hope it isn't then NATS may well think it is comfortably staffed at present for iFACTS training and the like but it won't be come April 1st 2011. I can't think there would be anyone over 55 who would even consider taking the risk of it being taxed. Now who knows how many that may be?
You don't have to leave NATS to draw your pension.