Before I arrived to do the Area Radar Course ( which I thoroughly enjoyed, Danny) it seems that a degree of nefarious activity was carried out by some Local Service Airwomen at a certain Radar Unit near Bournemouth. It seems, as I was told, that the 'call centre' was the Allocator at the Radar Unit, who related the messages to the WRAF block.
Numerous postings apparently followed, followed by some sort of posting regime (with LS Airwomen?) but by the time I got there the "Grimmies" had largely been replaced by nice, normal, lasses.
None of this may be true, of course.