Not sure if Brum accept work exp. If not then try for a visit which will give you a bit of an insight. Just for your inf NATS units are:. .Aberdeen. .Glasgow. .Scottish Centre . .Ediburgh. .Manchester. .Cardiff. .Farnborough. .Heathrow. .Gatwick. .London City. .Stansted. .Luton. .Southhampton. .Swanwick. .West Drayton. .Best of Luck!