What happened to the aircraft carrying Blair was as follows:. .Arrangements were being made for Blair's aircraft to be descended below the Lambourne stack for no delay when the controller checked with the pilot if he was required to comply with the night noise restrictions. Unfortunately this meant that he couldn't land before 0602. As is the norm at this time of day about 20 aircraft were also waiting to land after 0602 so Blair joined the Lambourne hold at the top and waited his turn. This resulted in him landing at about 0630. This was not therefore a Nats protest as has been suggested but purely ATC complying with Government night noise restrictions.