Henry Lloyd-Hughes (born 11 August 1985, Westminster, London) is an English actor, son of actress Lucy Appleby and Timothy Lloyd-Hughes, who worked for Deutsche Bank. He was educated at St Paul's School, London, and has two younger brothers: record executive Theo and actor Ben Lloyd-Hughes. His grandparents, Basil Appleby and Anne Padwick, were both actors. He made his television debut in Murphy's Law (2004) and gained prominence playing school bully Mark Donovan in The Inbetweeners (2008–2010) and its 2011 film adaptation. On stage he is known for his role as Dimitri Mitropoulos in Laura Wade's Posh at the Duke of York's Theatre and as Georges Pontmercy in the West End production of Les Misérables (2018); he was longlisted for the 2010 Evening Standard Theatre Awards for his performances in Rope and Posh. His notable film credits include Harry Potter and the Goblet of Fire (2005) (Daniel Radcliffe, Emma Watson), Unrelated (2007) (Tom Hiddleston, Gemma Jones), Weekender (2011) (Chris New, Andrew Lee Potts), Anna Karenina (2012) (Keira Knightley, Aaron Taylor-Johnson), Madame Bovary (2014) (Mia Wasikowska, Paul Giamatti), Man Up (2015) (Simon Bird, Hannah Hartney), Now You See Me 2 (2016) (Jessica Chastain, Mark Ruffalo), and The Thursday Murder Club (2025) (Pierce Brosnan, Helen Mirren). On television he is best known for his recurring role as Mark Donovan in The Inbetweeners (2008–2010), Ralph Whelan in Indian Summers (2015–2016), Aaron Peel in Killing Eve (2019), Sherlock Holmes in The Irregulars (2021), Jamie in Marriage (2022), and Genek Kurc in We Were the Lucky Ones (2024).