Fleet Estate Centre
From Tardis Wiki, the free Doctor Who reference
The Fleet Estate Centre was a shopping centre in London which Bonnie, in the form of Clara Oswald, once visited to locate a Zygon "traitor", Etoine.
The Twelfth Doctor and Osgood later went to the Centre, having located the source of a video Bonnie had posted online of Etoine returning to his true form. (TV: The Zygon Inversion)
