John has worked extensively in the theatre, including seasons at Harrogate, Ipswich, Birmingham and Liverpool. He has performed regularly at the National Theatre and at the RSC where he is an Associate Artist. His many credits include:
| 2005 | AS YOU DESIRE ME | Salesio | Jonathan Kent | Playhouse Theatre | |
| 2005 | HENRY IV Parts 1 & 2 | Scrope | Nicholas Hytner | National Theatre | |
| 2004/5 | HIS DARK MATERIALS | Lord Boreal | Nicholas Hytner | National Theatre (revival) | |
| 2003/4 | HIS DARK MATERIALS | Lord Boreal | Nicholas Hytner | National Theatre | |
| 2002 | THE COAST OF UTOPIA | Alexander Herzen/Consul/Worcell | Trevor Nunn | Royal National Theatre | |
| 200l | SEMI MONDE | Jerome Kennedy | Philip Prowse | Lyric Theatre, Shaftesbury Avenue | |
| 1998 | THE INVENTION OF LOVE | Jowett/Stead | Richard Eyre | Haymarket Theatre | |
| 1997 | THE INVENTION OF LOVE | Jowett/Stead | Richard Eyre | Royal National Theatre | |
| 1997 | A DOLL’S HOUSE | Dr Rank | Anthony Page | Belasco Theatre, New York | |
| 1996 | A DOLL’S HOUSE | Dr Rank | Anthony Page | Tour & West End | |
| 1994/5 | ALICE’S ADVENTURES UNDERGROUND | Mock Turtle/Frog Footman | Martha Clark | Royal National Theatre | |
| THE BOYS IN THE BAND | Harold | (Also Directed) | Dublin |
| 1999/00 | KING LEAR | Gloucester | Ninagawa | RSC/Thelma Holt Productions | |
| 1995/6 | THE PAINTER OF DISHONOUR | Don Juan Roca | Laurence Boswell | RSC Stratford/Barbican | |
| 1995 | CAIN | Lucifer | John Barton | Barbican | |
| 1993/4 | ELGAR’S RONDO | Jaeger | Di Trevis | Barbican/Stratford | |
| GHOSTS | Pastor Manders | Katie Mitchell | Barbican/Stratford | ||
| 1991/2 | A WOMAN OF NO IMPORTANCE | Lord Illingworth | Philip Prowse | Barbican, Tour & Haymarket Theatre | |
| 1990/1 | THE SEAGULL | Dorn | Terry Hands | Stratford/Barbican | |
| TWO SHAKESPEAREAN ACTORS | Macready | Roger Michell | Stratford/Barbican | ||
| A MIDSUMMER NIGHT’S DREAM | Theseus/Oberon | John Caird | Stratford/Barbican | ||
| CYMBELINE | Iachimo | Bill Alexander | Stratford/Barbican | ||
| THE MERCHANT OF VENICE | Antonio | Bill Alexander | Stratford/Barbican | ||
| TWELFTH NIGHT | Malvolio | Barbican | |||
| THE JEW OF MALTA | Machevil/Berneze | Barry Kyle | Stratford/Barbican | ||
| HYDE PARK | Lord Bonvile | Stratford/Barbican | |||
| THE NEW INN | Lovel | John Caird | Stratford/Barbican | ||
| A QUESTION OF GEOGRAPHY | Serioja’s Voice | Stratford/Barbican | |||
| NICHOLAS NICKLEBY | Ralph Nickleby | Trevor Nunn | Stratford | ||
| LOVE’S LABOURS LOST | Boyet | Barry Kyle | Stratford/Barbican | ||
| HENRY V | Canterbury/Burgundy | Adrian Noble | Stratford/Barbican | ||
| RICHARD III | Edward IV | Bill Alexander | Stratford/Barbican | ||
| MOLIERE | King | Bill Alexander | Stratford/Barbican | ||
| SOFTCOPS | Minister | Howard Davies | Stratford/Barbican | ||
| MUCH ADO ABOUT NOTHING | Don John | Terry Hands | Stratford/Barbican/Europe & USA | ||
| CYRANO DE BERGERAC | De Guiche | Terry Hands | Barbican/USA | ||
| THE BODY | Rector | Barbican | |||
| THE TAMING OF THE SHREW | Gremio | Barry Kyle | Stratford/Barbican | ||
| PEER GYNT | Pastor/Devil | Ron Daniels | Stratford/Barbican | ||
| TROILUS AND CRESSIDA | Ulysses | Terry Hands | Stratford/Barbican | ||
| THE FOOL | Parson | Howard Davies | Stratford/Barbican | ||
| TIMON OF ATHENS | Apemanthus | Ron Daniels | Stratford/Barbican | ||
| THE MAID’S TRAGEDY | The King | Barry Kyle | Stratford/Barbican |
| 2008 | SHIRASU JIRO | Professor Thompson | Keishi Oromo | Film Partners 20 20 Vision | |
| 2007 | HOLBY CITY | Professor Burnett | David Innes Edwards | BBC TV | |
| 2006 | TRIAL & RETRIBUTION | Judge | Michael White | La Plante Productions | |
| 2006 | HUSTLE | Lester | Stefan Schwartz | Kudos Productions | |
| 2006 | ROBIN HOOD | Thornton | John McKay | Tiger Aspect | |
| 2005 | THE CATHERINE TATE SHOW | Sir Michael | Gordon Anderson | Tiger Aspect | |
| 2004 | TOM BROWN’S SCHOOLDAYS | Mr. Lampard | David Moore | Company TV | |
| 2003 | DUNKIRK | Lord Gort | Alex Holmes | BBC | |
| 2003 | MIDSOMER MURDERS | Fitzgibbon | Sarah Hellings | Bentley Productions | |
| 2001 | THE FORSYTE SAGA | James Forsyte | Chris Menaul | Granada | |
| 1996 | CALL MY BLUFF | Panellist | BBC | ||
| 1994 | KAVANAGH QC | Judge Trafford | Paul Greengrass | Central | |
| 1993 | BETWEEN THE LINES | Douglas Carter | Alan Dossor | BBC | |
| 1992 | INSPECTOR ALLEYN | Sir Daniel Davidson | John Woods | BBC | |
| 1992 | BODY AND SOUL | George Tyler | Moira Armstrong | Red Rooster Films | |
| 1992 | LOVEJOY | Selwyn | John Woods | Witzend | |
| EMERGENCY WARD TEN | |||||
| 2004 | WAH-WAH | Sir Gifford Hardwicke | Richard E Grant | Loma Nasha Productions | |
| 2000 | THE BUNKER | Mirus | Rob Green | Millennium Pictures |
| 2007 | FELIX HOLT, THE RADICAL | Sir Maximus Debarry | Lucy Bailey | BBC Radio | |
| 2006 | STREET AND LANE | Charles | David Hunter | BBC R4 | |
| 2005 | FRAGMENTS | Grant | Julian Simpson | BBC R4 | |
| 2004 | MIRACLE POSTPONED | Reverend Woodard | Liz Webb | BBC R4 | |
| 2003 | OUR KATH | Sir John Barbirolli | Janet Whitaker | BBC R4 | |
| 2003 | STRANGERS & BROTHERS | Hector Rose | Sally Avens/ Jeremy Howe | BBC R4 | |
| 2002 | HIS DARK MATERIALS: THE SUBTLE KNIFE | Sir Charles | David Hunter | BBC R4 | |
| 2002 | WIFE TO MR MILTON | Richard | Cherry Cookson | BBC R4 | |
| 2001 | KING LEAR | Earl of Gloucester | Cherry Cookson | BBC R3 | |
| 1999 | THE INVENTION OF LOVE | Jowett/Stead | BBC R3 | ||
| 1998 | THE BIRDS FALL DOWN | Count | Cherry Cookson | BBC R4 | |
| 1997 | A HOUSE BY THE SEA | Ivan Belikov | BBC | ||
| 1996 | FRAMLEY PARSONAGE | Sowerby | BBC | ||
| BYRON (Ballet by Paul Reid) | Reader | BBC | |||
| 1995 | A MIDSUMMER NIGHT’S DREAM | Theseus | BBC | ||
| 1994 | FAST COACH FROM GNEIXENDORF | Beethoven | Andy Jordan | BBC |
| 2003 | MENDELSSOHN’S ANTIGONE | Tiresias | BBC Proms/City of London Sinfonia |