Thanks for the advice,
I have decided to go for the Engineering Technician scheme rather than the DEG as I have OND and HND (I got my BEng degree by staying at uni an extra year on a top-up - thought it was a good idea at the time!). The work I have had to date has been more down the lines of Test and production engineering than design and I have always liked hands on stuff better.
To apply I have to include my CV and a covering letter. With the covering letter I was just planning on talking about my background and saying that I want to apply to NATS for good long term career progression and top class training and development. Is that what they are looking for or do they want pages and pages of stuff etc.
cheers