Do the 'police' just speak without identification?
Yes. Cowardly, ain't it!!!
it is not the initial call for help and using 121.5 to sort out the aircraft position that I have a problem with - it is the subsequent use of 121.5 for something that it is not designed for
DFC, that may well be your opinion but, the only people who should be making the decision as to the correct use of 121.5 is the D&D/ATCU and pilot concerned - not you!!
Cheers
Whirls