Heathrow at 5am today is busy and First Wing is closed. There are queues, including immigration and Police around all security zones but otherwise it is flowing. Regular airside security queues were about 200-300 deep to actually get through to the scanners. Fast track about 80 deep. Lots of DYKWIAs out today, though, huffing and puffing that they have to queue or find a seat in the lounge. I have a comfy chair to watch the tutting show.