Guy Henry (born 17 October 1960) is an English actor whose roles include Henrik Hanssen in Holby City, Pius Thicknesse in Harry Potter and the Deathly Hallows – Part 1 and Part 2, Cassius in Rome and Grand Moff Tarkin in Rogue One.
Henry was born on 17 October 1960 in London. He attended Homefield School and then Brockenhurst College in Hampshire where he took A levels. He trained at RADA (1979–81). In 1982, he took the title role in ITV's Young Sherlock Holmes series, playing Holmes as a teenager (though Henry was by then nearly 22).
In February 2015, Henry was announced as a public supporter of Chapel Lane Theatre Company based in Stratford-Upon-Avon.
Henry first appeared on stage as a footman in amateur dramatic society Highcliffe Charity Players' production of Cinderella at age 11. He is now the president of HCP and continues to support their productions.
Henry's main work has been with the Royal Shakespeare Company, including the following roles:
1991 – Thurio (The Two Gentlemen of Verona), Poggio (Tis Pity She's a Whore), Ananias (The Alchemist).
1992 – Osric (Hamlet), Sir Formal Trifle (The Virtuoso)
1993 – Second Tempter and Second Knight (Murder in the Cathedral), Lelio (The Venetian Twins)
1994 – Director [character name] (A Life in the Theatre)
1996 – Sir Andrew Aguecheek (Twelfth Night)
1997 – Cloten (Cymbeline), Dr Caius (The Merry Wives of Windsor)
1998 – Lord Chamberlain (Henry VIII)
1999 – Russayev (Yuri Gagarin), Octavius Caesar (Antony and Cleopatra)
2001 – Malvolio (Twelfth Night), King John (King John), Mosca (Volpone)
2003 – Parolles (All's Well That Ends Well)
2013 – Captain Hook (Wendy & Peter Pan)
2026 - Stephano (The Tempest), Pishchik (The Cherry Orchard)
He has also worked with Cheek by Jowl, Theatre Set Up and the National Theatre (including Turgenev in Tom Stoppard's The Coast of Utopia in 2002).