The real life Bacup police station on Bank Street stood in for Hartley's copshop, and it was still a working nick until just last year. It's now to be converted into homes.
The popular misconception regarding the show is that Juliet Bravo was the name of the central character; it's not. It's her call sign. In fact there were two central characters; Insp Jean Darblay, played by Stephanie Turner, for the first three series, and Insp Kate Longton, played by Anna Carteret, for the final three series.