Tamsin Olivia Egerton-Dick (born 26 November 1988) is an English actress. She is known for her roles as Chelsea Parker in the 2007 film St Trinian's, Holly Goodfellow in the 2005 film Keeping Mum and Guinevere in the 2011 television series Camelot, one of three different roles she played in TV series connected with Arthurian legends.
Early life Egerton was born on 26 November 1988 in Surrey, to Michael Dick and his wife Nicola Egerton. Her father is a businessman. She began her acting career at age 6, following her older half-sister in a local youth theatre. Egerton attended the independent Ditcham Park School near Petersfield in Hampshire.
Career In 2001, Egerton began acting professionally when she played Mary Lennox in a Royal Shakespeare Company musical production of The Secret Garden, and appeared as young Morgaine in the television miniseries The Mists of Avalon. She soon chose to shorten her surname to Egerton. The following year she played Princess Elenora in the children's television series Sir Gadabout: The Worst Knight in the Land.
Egerton's film debut was as Holly Goodfellow, a precocious vicar's daughter in the black comedy Keeping Mum (2005). Her breakthrough role was as Chelsea, a member of a posh clique in St. Trinian's (2007). She reprised the role in its sequel St Trinian's II: The Legend of Fritton's Gold in 2009. Two years later, she starred in Chalet Girl with Felicity Jones, Ed Westwick, and Bill Nighy. In the same year she portrayed Guinevere in the historical fantasy drama series Camelot. In 2013, Egerton appeared in Michael Winterbottom's biopic The Look of Love which was based on the life of strip-club owner Paul Raymond.
Personal life Egerton has been in a long-term relationship with American actor Josh Hartnett, first announced in 2012. They have a daughter (born 2015), a second child (born 2017), and a third child (born 2019). In March 2022, Hartnett revealed that he and Egerton had married in November 2021. They reside in the Surrey–Sussex border region, in southeast England. In 2024, Hartnett confirmed that they had a fourth child.
Filmography Film Year Title Role Notes 2005 Keeping Mum Holly Goodfellow2006 Driving Lessons Sarah Eragon Katrina Uncredited 2007 St Trinian's Chelsea Parker2009 Knife Edge Flora St Trinian's 2: The Legend of Fritton's Gold Chelsea Parker2010 4.3.2.1. Cassandra Huge Clarisse The Story of F*** Daisy 2011 Chalet Girl Georgie2013 Amber St. George / Fiona Richmond Justin and the Knights of Valour Lara (voice) Grand Piano Ashley Laura Fennel2014 Queen and Country Ophelia Love, Rosie Sally 2016 Grimsby Carla 2019 Balance, Not Symmetry Fiona Miller 2024 Tell That to the Winter Sea Jade
Television Year Title Role Notes 2001 Young Morgaine Miniseries, 2 episodes 2002 Napoléon Betsy Balcombe Miniseries, 4 episodes 2002–2003 Sir Gadabout: The Worst Knight in the Land Princess Elenora / Sir Knight 20 episodes 2003 Hans Christian Andersen: My Life as a Fairytale Kate Dickens TV film 2004 Sherlock Holmes and the Case of the Silk Stocking Miranda Helhoughton TV film2006 Mayo Patti Feathers Episode: "A Species of Revenge" Silent Witness Hannah Duncan Episodes: "Supernova: Parts 1 & 2" 2007 Tiffany Unsold TV pilot2009 Octavia Octavia Brennan TV film Trial & Retribution Imogen Episode: "Siren: Part 1" 2010 Money Butch Beausoleil Miniseries, 2 episodes 2011 Camelot Guinevere Main role2013 The List Delilah TV film Psychobitches Nancy Spungen Episode #1.4 2015 Killing Jesus Claudia TV film
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