Just checked my July '03 salary, no 50% increase over the last five years here!
Overall NATS is a good company to work for, that is true, but there are interesting times ahead and the NATS HD remembers isn't really the same NATS that exists now.
So, enjoy your fat pension HD but others joining in the future, or who are currently working for the company, may well end up not enjoying the same benefits nor working conditions that you recall so fondly.