Treasure Hunt

Out to the airport to pick up S arriving back from Baltimore, a bit later than planned due to Heathrow losing its landing lights last night. Seems a bit careless. Every visit there's something changed: exit doors moved, check-in desks moved, taxi ranks moved. Today I couldn't find Domestic Arrivals but a nice gentleman standing around patiently with a large name card very kindly pointed me to the sign. You can see that it's huge, how could I have missed it?