Originally Posted by Level Attitude
they talked about the 'FIR Lost' 0030 Squawk. I must admit I have never heard of this before. Had anyone else?
This is a long-standing UK procedure. See UK IAIP ENR 1.6-6 Para 2.2.5.5:
Any pilot who believes they are flying in the vicinity of the aerodromes listed below who is lost or temporarily uncertain of position should immediately seek navigational assistance from the appropriate radar unit. Alternatively, they should select code 0030 and contact either London or Scottish Centre on 121.500 MHz for assistance.