In season three of Gangs of London, ex-undercover cop turned gangster Elliot is now operating as a top-level criminal alongside the Dumanis, but their business is thrown into chaos when their shipment of cocaine is spiked, resulting in the deaths of hundreds of civilians all over London. The ensuing chaos attracts attention from the authorities, putting the gangs of London under pressure like never before and the ripple effects - both personal and professional - will have devastating consequences for everyone from the Wallaces, to Luan, to Lale and the street gangs. This was a targeted attack and it's only the beginning, but the question is - who did it and why?