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Hero Beauregard Faulkner Fiennes Tiffin /faɪnz/; born 6 November 1997 is an English actor and film producer. He is most known for his starring roles in the After film series 2019–2023, for his portrayal of a young Tom Riddle in the film Harry Potter and the Half-Blood Prince[1] and Sherlock Holmes in the Young Sherlock series.
Hero Fiennes Tiffin was born in London on 6 November 1997, the son of film director Martha Fiennes and cinematographer George Tiffin.[2] He has two siblings. He does not hyphenate his name because his parents were never married.[3] He was educated at Reay Primary School in Lambeth, Emanuel School in Battersea, and Graveney School in Tooting.[4]
He is a member of the Twisleton-Wykeham-Fiennes family; his great-grandfather was Maurice Fiennes, and his maternal uncles are actors Ralph and Joseph Fiennes.[5] His maternal grandparents were photographer Mark Fiennes and novelist Jennifer Lash.[citation needed] Prior to his acting career, Fiennes Tiffin worked as a landscaper and caterer.[6]
Fiennes Tiffin made his first film appearance as Spartak in the 2008 drama film Bigga than Ben. He was subsequently cast as 11 year-old Tom Riddle in Harry Potter and the Half-Blood Prince, out of thousands of young actors who auditioned for the role.[7] Although at least one publication alleged that his family connections alone helped him get the part, director David Yates said he was cast due to his ability to find ’the darker space’ in his line readings, and that he did not get the role solely due to his relation to Ralph Fiennes, his uncle, who played Lord Voldemort. However, Yates did admit that the family resemblance was a clincher.[8]Yates described Fiennes Tiffin as very focussed and disciplined.[9] He said Fiennes Tiffin got the corners and dark moods and odd spirit of the character,[7]as well as having a wonderful haunted quality that seemed to bring Tom Riddle alive on-screen for us.[9]
Fiennes Tiffin is a football fan and supports West Ham United F.C.[23][24]
Hero Fiennes Tiffin with West Ham United ended the Club’s The Soccer Tournament TST campaign on a high with victory over Culture by Mo Ali FC in 2023.[25] West Ham United’s TST squad is led by player-coach Anton Ferdinand and actor and Irons superfan Hero Fiennes Tiffin. 7v7 world championship were in the United States in June 2025.[26] Hero, with other celebrities, played golf in a Charity Pro-Am at the BMW PGA Championship in September 2025.[27]
Fiennes Tiffin has played football in the Sellebrity Soccer Charity Match several times: May 2024,[28] April 2025,[29] and October 2025.[30]