When I was a Space Cadet sproglet in Oz in the 80s, we had an instructor who had flown RAAF Lincolns through the UK test clouds in the 1950s - and not been tested, decontammed, dosimetered and all the rest. (Though some RAF Canberras had been and were treated very differently, apparently). His mates were (unsurprisingly) suffering from all kinds of ailments.
Not directly related to 543, but wonder if it's worth getting in touch with the RSL in Oz to see if they've got anything on this sort of thing?
S41