Tony

Tony Benson (played by Peter Ferdinando) is a severely socially isolated, unemployed man living alone in a council estate tower block flat in Dalston, east London. He has been on state benefits for over twenty years, suffers from severe mental health and developmental problems, and spends his days aimlessly wandering the streets in futile attempts to connect with people, as well as obsessively collecting and watching violent 1980s VHS action films. Unknown to those around him, Tony is a serial killer. He preys on men he encounters largely by chance — including drug addicts he invites back to his flat under the pretence of socialising. During one such encounter, he suffocates one man with a plastic bag while locking the other in a cupboard, later releasing him. He also lures victims from gay bars. Back in his flat he methodically dismembers the bodies in his kitchen sink, wrapping the separated parts in newspaper, placing them in blue plastic bags, and disposing of them in the River Thames and nearby canals. He stores some corpses around the flat, including in his bed. A crisis arises when a neighbour's young son goes missing and suspicion falls on Tony; a drunk local man (Ricky Grover) confronts and violently harasses him, accusing him of being a paedophile. A police detective arrives and begins searching the flat, coming dangerously close to discovering the evidence, while Tony contemplates attacking him with a potato peeler. Before the search can be completed, the detective receives word that the boy has been found alive elsewhere, and Tony is left in the clear. The film ends with Tony exonerated and apparently free to continue his murderous existence, shown walking the streets of London, unremarkable and invisible amid the urban crowd.

Sources: Wikipedia, Web search (Kultguy's Keep, FatherSonHolyGore review excerpts via search snippet)