Hilda Rowse

Hilda Rowse was a telephone exchange operator in the 1960s, and the wife of PC Bert Rowse.

Biography
Hilda also ran the combined village shop/post office, which was in addition the local police station.

Hilda realised that Forester was impersonating Arnold Farrow over the phone, and alerted her husband Bert to the strange goings-on. (TV: Planet of Giants)