Sean trained at the Guildford School of Acting.
| 2010 | THE IMPORTANCE OF BEING EARNEST | Dr Chausable | Mark Thomson | Royal Lyceum, Edinburgh | |
| 2010 | ROMEO & JULIET | Friar Lawrence | Tony Cownie | Royal Lyceum, Edinburgh | |
| 2009 | THE DEATH OF LONG PIG | Louis/Pigo | Alex Summer | Finborough Theatre | |
| 2008 | THE ENGLISH GAME | Thizz | Sean Holmes | Headlong Theatre | |
| 2004 | BURIED CHILD | Bradley | Matthew Warchus | National Theatre | |
| 1999 | JANE EYRE | Mr Rochester | Polly Teale | Shared Experience Tour | |
| 1998 | THE CRUCIBLE | John Proctor | Kenny Ireland | Centreline Tour | |
| 1996/7 | THE CHERRY ORCHARD | Trofimov | Adrian Noble | Albery Theatre/Tour | |
| 1995/6 | THE CHERRY ORCHARD | Trofimov | Adrian Noble | RSC Stratford/Barbican | |
| 1995/6 | THE PHOENICIAN WOMEN | Eteocles | Katie Mitchell | RSC Stratford/Barbican | |
| 1993 | THE TERRIBLE VOICE OF SATAN | Tom | James Macdonald | Royal Court | |
| 1991/3 | THE VIRTUOSO | Longville | Phyllida Lloyd | RSC Stratford/Barbican | |
| 1991/3 | TWO GENTLEMEN OF VERONA | Speed | David Thacker | RSC Stratford/Barbican | |
| 1991/3 | ROMEO & JULIET | Tybalt + u/s Romeo | David Leveaux | RSC Stratford/Barbican | |
| 1991/3 | A WOMAN KILLED WITH KINDNESS | Nicholas | Katie Mitchell | RSC Stratford/Barbican | |
| 1991/3 | AMPHIBIANS | Broaders | Michael Attenborough | RSC Stratford/Barbican | |
| 1990 | OTHELLO | Cassio | Paul Unwin | Bristol Old Vic | |
| 1989 | THE FAIRY QUEEN | Lysander | Adrian Noble | Aix-en-Provence Festival | |
| 1989 | THE COMEDY OF ERRORS | Dromio of Ephesus | Bristol Old Vic | ||
| THE LIFE OF GALILEO | The Little Monk | Paul Unwin | Bristol Old Vic | ||
| THE RIVALS | Bob Acres | Tony Cornish | Bristol Old Vic | ||
| TARTUFFE | Damis | Paul Unwin | Bristol Old Vic | ||
| JUDY | Mickey Rooney | John David | Bristol Old Vic | ||
| ANDROCLES & THE LION | Metellus | Paul Unwin | Bristol Old Vic | ||
| A LITTLE HOTEL ON THE SIDE | Maxime | John David | Bristol Old Vic | ||
| SCHOOL FOR SCANDAL | Charles Surface | Les Walters | Bristol Old Vic | ||
| JUDY | Mickey Rooney | John David | Greenwich Theatre | ||
| FOR KING & COUNTRY | Lieutenant | Alan Strachan | |||
| THE MISANTHROPE | Acaste | Paul Unwin | Cambridge Theatre Company |
| 2010 | HOLBY CITY | Tom | Rob Evans | BBC TV | |
| 2007 | ROBIN HOOD series 2 | Dan Scarlett | Richard Barrell (producer) | Tiger Aspect | |
| 2007 | CASUALTY | Skip | Tom Agnew | BBC TV | |
| 2006 | ROBIN HOOD series 1 | Dan Scarlett | John McKay | Tiger Aspect | |
| 2005 | JUDGE JOHN DEED | Professor Cluck | Tristram Powell | BBC | |
| 2003 | DUNKIRK | Captain Halsey | Alex Holmes | BBC | |
| 2003 | HOLBY CITY | Skinner | Keith Boak | BBC | |
| 2002 | SERIOUS & ORGANISED | Ronald Sharpe | Lance Kneeshaw | Company Productions | |
| 2002 | THE BILL | Alan Goff | Nigel Keen/ Steve Finn | Thames TV | |
| 2000/1 | WITHOUT MOTIVE (2 series) | Monty Fowler | Tristram Powell/Ferdinand Fairfax | United TV/HTV | |
| 2000 | SILENT WITNESS | Matt Dwyer | Paul Unwin | BBC | |
| 1998 | A WING & A PRAYER | Roland Kerr | Justin Hardy | Pearson Television | |
| 1998 | A RATHER ENGLISH MARRIAGE | Alan | Paul Seed | Wall to Wall | |
| 1997 | BERKELEY SQUARE | Arnold St. John | Alison Davis | BBC | |
| 1995 | THE BILL | Dwyer | Brian Parker | Thames TV | |
| 1994 | PEAK PRACTICE | Martin Harding | Tony Garner | Central TV | |
| 1994 | SEAFORTH | Field | Stuart Burge | Initial Films | |
| 1993 | SMOKESCREEN | Sidney Greenaway | Giancarlo Gemin | Red Rooster | |
| 1993 | THE BILL | Johnny Owen | John Strickland | Thames TV | |
| 1990 | ADVOCATES | Sam Coutts | Peter Barber Fleming | STV | |
| 1989 | SOUTH OF THE BORDER (2nd series) | Zed | Ngozi Onwurah | BBC | |
| THE COUNTRY BOY | Baz | Colin Cant | BBC | ||
| 2004 | THE TRUTH | Candy’s Father | George Milton | The Truth Movie Ltd | |
| 2001 | FINDING MALLORY | Mallory | Bridget Holding | Red Ruby Films | |
| 1990 | HAMLET | Guildenstern | Franco Zefferelli | Marquis Films |
| 2007 | STARLIGHT’S APPRENTICE | Dr Dwyer | Lu Kemp | BBC R4 | |
| 2006 | IMAGINE: SAINT NICK | Barry | Carmela DiClemente | BBC R2 | |
| 2003 | THE CHIMES | Charles Dickens | Gaynor Macfarlane | BBC R4 |