Interesting topic
I fly a Turbo prop puddle jumper out of BHX and have never understood the radio failure rules in the UK, My original licence is very Ozzie, like their system much better.
I will also apologise to all ATC in advance, If I lose comms, 7600 comes down, and I will follow the flight plan route (inc STAR) to the most sensible Approach, on breaking visual visual, I will look for the green light at the tower and land! If it's red 'going round time' back to the hold for 10 minutes and try again.
I hope that the ATC will see the 7600 and clear the airspace, cause a little disruption but I hope that they want me out of their airspace asap.
So far had 3 r/t failures (EGGD, YBBN and YBMC). Got comms back on 2, used my mobile for the third, got a great clearance. thanks guys.