Well here's a cost saving solution.Post a lot of the top of the scale ATCO2 out to Heathrow.They are really short at the moment,and there shouldn't be any problems with them validating.After all one has to be suitable for Manchester,so Heathrow should be easy.Then replace them with cheaper Atcos out of the college,and pay them less.
Where have I heard that before.
Once the centre goes,then Manchester airport NSL is a smaller unit than Aberdeen,and should get the same treatment.