When I was a lowly-paid clerk in the Min of Av in the early 1960s the white block on the north side of London Airport was always referred to as the "Southern Centre" and its full name was written on the outside wall in large metal letters.
The Centre Superintendent's name was Len something (I can't recall his surname). Come the day when workmen took down the metal letters to do some repainting some ATC wags on the night duty rehung some of the letters to read "Len's Cafe". Next morning the car park was full of lorries.....
Does anyone know how far down the LATCC building went? I was told about 5 floors but I never investigated in case I had an accident down there, never to be found!