I did 10 years with serco (IAL) from 1994 to 2004. My experience was a good one. Granted one or two others didn't feel the same, but we can't please everyone all the time. I'm now working for NATS again and sadly I'm deeply saddened by what's going on in the company. For years NATS considered itself the 'best', well it's not far off being second best now.