In Peaky Blinders Season 6, Episode 4, titled "Sapphire," Tommy Shelby receives a devastating medical diagnosis that seems to seal his fate: an in his brain stem. His doctor, Dr. Holford, gives him just 12 to 18 months to live, explaining that the growth was likely contracted from his daughter, Ruby.
Beyond the medical fake-out, Tommy’s survival is also tied to his character's "immortality" through the war. [S6E4] Why Is Tommy Still Alive?
The diagnosis was a orchestrated by his political rival, Sir Oswald Mosley. In Peaky Blinders Season 6, Episode 4, titled
However, the reason Tommy is "still alive" by the end of the series is one of the show's biggest twists. It turns out he was never actually terminally ill. The Great Deception Beyond the medical fake-out, Tommy’s survival is also
Here’s What Happened in the ‘Peaky Blinders’ Series Finale - Netflix
Tommy only discovers the truth in the series finale after seeing a newspaper clipping of Mosley’s wedding, which featured Dr. Holford as a guest. Why He Didn't Die