Thirty years before this, on the same spot, Colin Roach was lured to his death where he was shot in the foyer of the station - and despite it being one of London's busier stations there were no witnesses. Cold blooded murder went down as suicide by the corrupt Coroner despite all the evidence pointing to it not being suicide (evidence from the police surgeon who was the first responder, forensic evidence of the gun and Roach's belongings). They killed, or helped kill Colin Roach and got away with it.
Not happy with that they had at least one other (Trevor Monerville) suspicious death in/after custody. And then went on the most rampant corrupt drug and prostitution racket the Met has ever seen. For which nobody was ever convicted. Detective Ronald Palumbo survived a lengthy 'inquiry' which completely absolved him of any serious drug crimes (they were feeding drugs back to the street for personal profit, planting drugs all over the place) then got nicked two days after the inquiry and sentenced to 10 years for separate drug offences. But the whole station was corrupt and the worst that happened to them was that they were politely asked to resign.
Stoke Newington police station should know all about stinks.
Colin Roach, never forget.