• Empire of light (2022) - Mr. Ellis
• Mothering Sunday - Secret Love (2021) Mr. Niven
• Operation Mincemeat - L'arma dell'inganno (2021) Ewen Montagu
• The Staircase (TV Series - 8 Puntate) (2021) Michael Peterson
• Supernova (2020) Sam
• Il giardino segreto (2020) Lord Archibald Craven
• 1917 (2019) Generale Erinmore
• Kursk (2018) David Russel
• Il ritorno di Mary Poppins (2018) William Weatherall Wilkins
• Mamma Mia: Here We Go Again! - Mamma Mia!Ci risiamo (2018) Harry
• The happy prince (2018) Reggie Turner
• Il mistero di Donald C. (2018) Donald Crowhurst
• Kingsman: il cerchio d'oro (2017) Harry Hurt
• Red Nose Day Actually (2017) Jamie (durata 15 minuti trasmessi dalla BBC -> visibile qui)
• Bridget Jones's Baby (2016) Mark Darcy
• Genius (2016) Max Perkins
• Kingsman: Secret Service (2014) Harry Hart / Galahad
• Before I Go to Sleep (2014) Ben
• Magic in the Moonlight (2014) Stanley
• Devil's Knot - Fino a prova contraria (2013) Ron Lax
• The Railway Man -Le due vie del destino (2013) Eric
• Gambit - Una Truffa a regola d'arte (2012) Harry Deane
• Il mondo di Arthur Newman (2012) Arthur Newman (Wallace Avery)
• Tinker, Tailor, Soldier, Spy - La Talpa (2011) Bill Haydon
• Main Street (2010) Gus Leroy
• Steve (2010) Steve (tv short)
• The King's speech -Il discorso del re (2010) Re Giorgio VI 
• St Trinian's 2: The Legend of Fritton's Gold (2009) Geoffrey Thwaites
• A Christmas Carol (2009) Fred 

• A Single Man (2009) George  
• Dorian Gray (2009) Lord Henry Wotton 
• Easy Virtue - Un matrimonio all'inglese (2008) Mr. Whittaker 
• Genova (2008) Joe 
• Mamma Mia! (2008) Harry
• The Accidental Husband - Un marito di troppo (2008) Richard Bratton
• Mamma Mia (scene tagliate) (2008) Harry
• St. Trinian's (2007) Geoffrey Thwaites
• Then she found me - Quando tutto cambia (2007) Frank
• And When Did You Last See Your Father? (2007) Blake Morrison
• The Last Legion - L'ultima legione (2007) Aurelius
• Celebration (TV movie) (2007) Russell
• Born Equal (TV movie) (2006) Mark
• Nanny McPhee - Tata Matilda (2005) Cedric Brown
• Where the truth lies - False verità (2005) Vince Collins
• Bridget Jones: The Edge of Reason - Che pasticcio, Bridget Jones! (2004) Mark Darcy
• Saturday Night Live (TV series) (2004) ospite
• Trauma (2004) Ben
• Love actually - L'amore davvero (2003) Jamie Bennett
  
• Girl with pearl earring -La ragazza con l'orecchino di perla (2003) Johannes Vermeer
  
• What a girl wants - Una ragazza e il suo sogno (2003) Henry Dashwood
  
• Hope Springs (2003) Colin War
  
• The importance of being Earnest -L'importanza di chiamarsi Ernest (2002) John 'Jack' Worthing
  
• Londinium - Four Play (2001) Allen Portland
  
• Conspiracy (TV movie) (2001) Dr. Wilhelm Stuckart
  
• Bridget Jones's Diary - Il diario di Bridget Jones (2001) Mark Darcy
  
• Donovan Quick (TV movie) (2000) Donovan Quick
  
• Relative Values - La fidanzata ideale (2000) Peter Ingleton
  
• The Turn of the Screw (TV movie) (1999) Master
  
• Blackadder Back & Forth (short) (1999) William Shakespeare
  
• The Secret Laughter of Women (1999) Matthew Field

• My life so far - La mia vita fino ad oggi (1999) Edward Pettigrew
  
• Shakespeare in Love (1998) Lord Wessex
  
• A Thousand Acres - Segreti (1997) Jess Clark
  
• Fever Pitch - Febbre a 90° (1997) Paul Ashworth
• The English Patient - Il paziente inglese (1996) Geoffrey Clifton
• Nostromo (TV mini-series) (1996) Charles Gould
  
• Pride and Prejudice -Orgoglio e Pregiudizio (TV BBC mini-series 6 episodi) (1995) Mr. Fitzwilliam Darcy
  
• Circle of Friends - Amiche (1995) Simon Westward
  
• The Widowing of Mrs. Holroyd (1995) Charles Holroyd
• The Deep Blue Sea (1994) Freddie Page
• Master of the Moor (3 episodi) (1994) Stephen Whalby
• Playmaker (1994) Ross Talbert/Michael Condren
• The Hour of the Pig / The Advocate (1993) Richard Courtois
• Hostages (TV movie) (1992) John McCarthy
• Mad at the Moon (1992) Barbiere (non accreditato)
• The Play on One (TV series) 
  – Out of the Blue (1991) Alan
• Femme Fatale (1991) Joseph Prince
• Wings of fame - Le ali del successo (1990) Brian Smith
• Valmont (1989) Valmont
• Apartment Zero (1988) Adrian LeDuc
• Tumbledown (TV movie) (1988) Robert Lawrence
• The Secret Garden (Tv movie) (1987) Adult Colin Craven
• A Month in the country - Un mese in campagna (1987) Tom Birkin
• Tales from the Hollywood Hills: Pat Hobby Teamed with Genius (TV movie) (1987) Rene Wilcox
• Lost Empires (TV mini-series) (1986) Richard Herncastle (7 episodi) 
• Nineteen Nineteen (1919) (1985) Young Alexander
• Dutch Girls (TV movie) (1985) Neil Truelove
• Camille (1984) Armand Duval
• Another Country - La scelta (1984) Tommy Judd
• Crown Court (TV series) (1984) PC Franklin (episodio Citiziens: Part 1)

In alto le foto/locandine degli spettacoli teatrali fatti da Colin in ordine dal più recente al più lontano:

1) Three Days of Rain (1999) Walker/Ned

2) Chatsky (1993) Chatsky

3) The Caretaker (1991) Aston

4) Desire Under The Elms (1987) Eben

5) The Lonely Road (1985) Felix

6) The Doctor's Dilemma (1984) Luis Dubedat

7) Another Country (1983) Guy Bennet