Sherlock Quiz

Everything about the main cast of the BBC series Sherlock, the contemporary detective drama that ran from 2010 to 2017 across four series and a special. The set covers the actors credited as series regulars only: not guest, recurring or one-episode roles, and not any other Sherlock Holmes adaptation. Name the actors who played each role (the answer is always the actor, never the character), match each face to a name, snap each character to the actor who played them, pick the real cast out of a grid of same-era British TV decoys, fill in the show's most quoted lines, and answer real trivia about the series. Cast taken from the series' billing order, corroborated against Wikidata and Wikipedia.