My wife arrived at T1 on Thu at 4.30 without any problem - just ahead of the mess I guess. I arrived at 6.45 last night (Fri) and although it was that awful HKG/PEK/PVG/LHR arrivals window, there were NO lines at customs. I had wondered what I would do if there were bad lines and how to bypass it with Nexus, although last night it was just as fast to go to an agent.