Yes the Webley has featured in a few movies, the iconic Pink Floyd movie "The Wall" has a sequence where Pink's father cleans his Webley and recharges the cylinder while in his bunker in the trenches. He is later killed in the trenches and then another sequence of Pink as a school boy home alone finding a box of 455 ammo amongst his fathers returned posessions. He takes some of the ammo and along with some school mates put a round on the railway tracks as a train approaches, the exploding 455 round is the cue for another great PF song in the movie.

I had my Webley at the time I saw the movie and also a box of the same ammo so these movie scenes have always stuck in my mind.