The supposed discrimination in favour of different nationalities makes me smile. Each aircrew wants to be first. EVERY controller wants as many aircraft OFF the frequency as soon as possible. To engineer a system which offers a few track miles less to aircraft (a) whilst meaning more vectoring for aircraft (b)(and associated increase in workload for the ATCO) is not something we do in the UK. In my own particular part of the world I have had complaints from aircraft in the SAME company about their colleague being number one........
