Your age is showing. They are not called WPCs any more but Police Officers, just as firemen are called firefighters in deference to lady firemen. Sailors are, however, just sailors.
Some years ago. 3 of us sitting in a van in central London were asked by a WPC for directions to a nearby pub. Turned out she was actually a stripogram. Being the kind peeps we are, we offered her a lift which she accepted even though it meant sitting on 2 of our laps. Good job she wasn't a real copper cos her wares got sampled on the way!