Check 6:
London Mil are still at West Drayton, hopefully will move with LTCC (circa 2005??). These problems will not have affected them, except where they had traffic to join controlled airspace. Quite probably they handled some commercial flights who were willing to fly outside airways.
N.B. There still military controllers (LJAO) working with (and at) the LTCC at Swanwick, just as there were at LATCC.