Scotland Yard

Scotland Yard was often used as a metonym for the Metropolitan Police Service of London, UK.

Inspector Lestrade was a detective from Scotland Yard. (NA: All-Consuming Fire)

In 1840, Inspector Arnold Porter worked for Scotland Yard, specifically on the Spring-heeled Jack case. (DWM: The Curious Tale of Spring-Heeled Jack)

Ian Stratford was transferred from Scotland Yard to the Metropolitan Police Service. (EDA: The Banquo Legacy)

The Eleventh Doctor pretended to be an officer from the service whilst visiting the White House. (DW: The Impossible Astronaut)

It appears that in the 22nd century, Scotland Yard was replaced by New New Scotland Yard. (DWBIT: Pawns of the Zenith)