While the specific locations aren't widely publicized, the show clearly takes place in and around London. You can see various recognizable landmarks throughout the series, like:
* The Shard: This iconic skyscraper is featured in several scenes.
* Tower Bridge: The famous bridge is seen in the background during a few sequences.
* The Thames River: The river plays a prominent role in various scenes, showing the cityscape from different angles.
While some scenes may be shot in studios, the show largely uses authentic London locations to capture the atmosphere of the city.