Trained at the Bristol Old Vic Theatre School.
| 2010 | TRILBY | Svengali | David Cottis | Finborough Theatre | |
| 2010 | JACK THE KNIFE | one-man show | Edinburgh Festival Fringe/Drill Hall | For this Jack won a Bank of Scotland Herald Angel ‘Archangel’ Award | |
| 2010 | SHRUNK | Max Goldman | Julian Birkett | Cock Tavern | |
| 2010 | NAGGING DOUBT | one-man show | Finborough Theatre | ||
| 2009 | STOCKWELL | Michael Mansfield | Sophie Lifshutz | Landor Theatre/Tricycle Theatre | |
| 2009 | THE UNSPEAKABLE | Edward | Phil Ormrod | Tristan Bates Theatre | |
| 2007 | CHANGE | Bob Ellis | Gordon Carver | Assembly Rooms | |
| 2006 | COPENHAGEN | Bohr | Matthew Lloyd | Palace Theatre, Watford | |
| 2006 | THE REPRESENTATIVE | The Cardinal | Kate Wasserberg | Finborough Theatre | |
| 2006 | HAMLET | Claudius | John Russell Brown | Southwark Playhouse | |
| 2006 | TWELFTH NIGHT | Sir Toby Belch | John Russell Brown | Southwark Playhouse | |
| 2005 | CARVER | Blind Man | William Gaskill | Arcola Theatre | |
| 2005 | PHALLACY | Rex | Andy Jordan | New End Theatre | |
| 2002 | SECRET HEART | Hackenschmidt | Wils Wilson | Royal Exchange Manchester | |
| 2001/2 | OXYGEN | Priestley/Bengt | Andy Jordan | Riverside Studios | |
| 2000 | THE FREE STATE | Leo Guyver | Janet Suzman | The Fifth Amendment Tour | |
| 1998 | A CHRISTMAS CAROL | Narrator | Michael Bogdanov | Birmingham Rep | |
| 1998 | HAMLET | Polonius | Bill Alexander | Birmingham Rep | |
| 1998 | LEBENSRAUM | Actor 2 | Michael Fry | King’s Head Theatre | |
| 1997/8 | THE RELAPSE | Lord Foppington | Philip Prowse | Glasgow Citizens & Tour | |
| 1997 | THE CHERRY ORCHARD | Leonard Guyver | Janet Suzman | Birmingham Rep | |
| 1995/6 | GULLIVER’S TRAVELS | Gulliver | Roger Redfarn | Theatr Clwyd Tour | |
| 1995 | INSIGNIFICANCE | Joe di Maggio | Terry Johnson | Donmar Warehouse | |
| 1992/3 | SCHOOL OF NIGHT | Sir Walter Raleigh | Bill Alexander | RSC Stratford & Barbican | |
| 1992/3 | TAMBURLAINE | Theridamus | Terry Hands | RSC Stratford | |
| 1992/3 | POINT VALAINE | Stefan | Tim Luscombe | Chichester Festival Theatre | |
| 1991 | MAP OF THE HEART | Angus | Peter Wood | Globe Theatre | |
| 1990 | MACBETH | Macbeth | Antony Clarke | Birmingham Rep | |
| 1990 | OTHELLO | Iago | Paul Unwin | Bristol Old Vic | |
| 1989 | THE ROYAL HUNT OF THE SUN | Atahualpa | Tim Piggot Smith | Compass Theatre Tour | |
| 1988 | I’M NOT RAPPAPORT | Nat | Steve Woodward | Bristol Old Vic Theatre | |
| 1986 | KING ARTHUR | Lancelot | Malcolm Fraser | Buxton Festival | |
| 1985/6 | BEAUTY & THE BEAST | Hew & Beast | Jules Wright | Liverpool Playhouse & Old Vic | |
| 1982/3 | THE MESSIAH | Asher | Ronald Eyre | Hampstead & Aldwych Theatres | |
| 1982 | DETECTIVE STORY | Tami | John Dillon | Manchester Royal Exchange | |
| 1980 | JULIUS CAESAR | Peter Gill | Riverside Studios | ||
| DONKEY’S YEARS | Dr. Taylor | John David | Bristol Old Vic | ||
| 1979 | TROILUS & CRESSIDA | Diomed | Richard Cotterell | Bristol Old Vic | |
| 1978 | THE MATCHMAKER | Ambrose | Jonathan Lynn | Her Majesty’s Theatre | |
| 1978 | SON OF LIGHT | Gower | Ron Daniels | RSC | |
| 1977 | AS YOU LIKE IT | Charles the Wrestler | Trevor Nunn | RSC | |
| HENRY VI | Clarence | Terry Hands | RSC | ||
| 1977 | A THOUGHT IN THREE PARTS | Dick | Max Stafford Clark | Joint Stock |
Jack has also appeared at the Edinburgh Festival and in many other theatres in Britain and abroad in several of his own works: NAGGING DOUBT; CUDDLES; MORE CUDDLES; THE FIFTY MINUTE HOUR; LETTERS ALONE; KAFKA; WONDERFUL DARLING, STAND UP, LOTS OF SUDDENLIES, BOSOM BUDDIES, URBAN RAGE and BE MY, BE MY BABY.
| 2004 | MIDSOMER MURDERS | Freddie Bonavita | Renny Rye | Bentley Productions | |
| 1998 | BABES IN THE WOOD | Lawrence | Andy de Emmony | Lucky Dog for Carlton | |
| 1997 | CADFAEL: THE POTTER’S FIELD | Eudo | Mary McMurray | Carlton Productions | |
| 1997 | ROAD RAGE | Conrad | Bruce Macdonald | Blue Heaven | |
| 1996 | IVANHOE | Malvoisin | Stuart Orme | BBC | |
| 1995 | SIX SIDES OF COOGAN | The Tycoon | Geoff Posner | Pozzitive for BBC | |
| 1995 | CLASS ACT | Grigor | Herbert Wise | Cinema Verity | |
| 1995 | GHOST HOUR: BLOOD & FIRE | Trevor | Terry Johnson | BBC | |
| 1994 | A CASE OF COINCIDENCE | John Stockton | Gavin Miller | Blue Heaven Productions | |
| 1994 | CIRCLE OF DECEIT | Osuna | Peter Fleming | YTV | |
| AUGUSTINE’S BIG HYSTERIA | Chareot | Amanda Rubin | Pirana Productions | ||
| 1993 | GRUSHKO | Milyukin | Tony Smith | Mark Forstater Prods | |
| 1993 | WALL OF SILENCE | Yossel | Philip Savile | BBC/Alomo | |
| 1991 | RED DWARF | Abraham Lincoln | Ed Bye | BBC | |
| 1990 | FREDDIE AND MAX | Armand | John Stroud | Sitcom with Anne Bancroft | |
| 1990 | THE FINAL WARNING | Andre | Anthony Page | US Cable TV | |
| 1990 | SHERLOCK HOLMES | Hon Philip Green | John Madden | Granada | |
| 1989 | A STRIKE OUT OF TIME | David Hart | Paul Bryers | Brook Productions | |
| 1989 | MAKING NEWS | Alex Hendry | Jonathan Sacks | Thames (Pilot) | |
| 1988 | POIROT | Prince Arthur | Renny Rye | LWT | |
| 1988 | TEABAG | Thames | |||
| 1988 | THE MURDERERS AMONG US | Ben | Brian Gibson | TVS | |
| 1987 | VANITY FAIR | Rawdon Crawley | Diarmuid Lawrence/Michael Morris | BBC | |
| 1987 | DEATH IS PART OF THE PROCESS | Adrian | Bill Hayes | BBC | |
| 1985 | BOON | Central | |||
| ANYTHING LEGAL CONSIDERED | Central | ||||
| FOUR F’S TO SHARE | Central | ||||
| 1982 | REILLY ACE OF SPIES | Alexei | Jim Goddard | Euston Films | |
| 1977 | THE SWEENEY | Ari | Mike Vardy | Euston Films |
As in theatre Jack has also appeared in television films of his own work. An original TV play MAYBE BABY for the BBC, NAGGING DOUBT and FIFTY MINUTE HOUR for Limehouse Productions and Ch4 and was a regular contributor to Granada’s science programme THE ACID TEST.
| 2003 | THE THREAT | Col. McReady | Kjell Sundvall | Cinema Art Productions AB | |
| 1989 | 1871 | General Cluseret | Ken McMullen | Looseyard Productions | |
| 1984 | KING DAVID | Jonathan | Bruce Beresford | Universal (w/ Richard Gere) | |
| 1980 | FOR YOUR EYES ONLY | Apostis | John Glen | Eon Productions | |
| 1976 | STAR WARS | John D. | George Lucas |
Jack is a regular voice on radio appearing in a wide variety of programmes including WEEKENDING, THE DELVE SPECIAL, YE SITTE COMM and his own plays MADAM’S GOOD GIRL, THAT’S EASY FOR YOU TO SAY, ON THE LINE and FREUD AND JUNG. He played the lead role in THE SEA WOLF for which he was nominated for an award. Most recent recordings include:
| 2011 | I REGRESS | Spider | Sam Bryant | BBC R4 | |
| 2010 | TOKYO VICE | Jake Adelstein/Reader | Jane Marshall | BBC R4 | |
| 2010 | THE LIGHT OF DARKNESS | Sabit Bey/Prof Nersessian | Judith Kampfner | BBC R3 | |
| 2010 | A BRIDGE TO THE STARS | Older Joel | David Hunter | BBC R4 | |
| 2010 | TROLL | Troll | Jonquil Panting | BBC R4 | |
| 2010 | THE LAST RESORT | Zimbabwe Reader | Jane Marshall | BBC R4 | |
| 2009 | ALBERT SPEER’S WALK AROUND THE WORLD | Rudolph Hess | Judith Kampfner | BBC R4 | |
| 2009 | UTZ | Utz | Marilyn Imrie | BBC R4 | |
| 2008 | OPEN BOOK: RED DUST | Reader | Hilary Dunn | BBC R4 | |
| 2008 | OPEN BOOK: THE IMPOSTER | South African Reader | Thomas Morris | BBC R4 | |
| 2007 | THE ENIGMA I WILL NOT EXPLAIN | Reader | Emma Kingsley | BBC R4 | |
| 2007 | MY GLASS BODY | Various | Anna Furse | BBC R3 | |
| 2006 | THE CODE OF THE WOOSTERS | Roderick Spode | Jonquil Panting | BBC R4 | |
| 2005 | MARKHEIM | Markheim | John Taylor | BBC R4 | |
| 2005 | THE FACE OF THE ENEMY | Textor Texel | Jill Waters | BBC R4 | |
| 2005 | GREENMANTLE | Col Von Stumm | Bruce Young | BBC R4 | |
| 2005 | SNOW | Serdar Bey | Marilyn Imrie | BBC | |
| 2004 | THE HIDING PLACE | The Captain | Philip Glassborow | USA Radio | |
| 2004 | GILES WEMMBLEY HOGG GOES OFF | Serguei | David Tyler | BBC R4 | |
| 2003 | YAA ASSANTEWAA | Governor | Pam Fraser-Solomon | BBC R4 | |
| RIDERS OF THE PURPLE SAGE | Oldring | Adrian Bean | BBC Radio | ||
| 2001/2 | THE MAN WHO KNEW EVERYTHING | George Lewis | Clive Brill | BBC R4 |
Jack recorded ‘Alonso’ in THE TEMPEST for Riverrun Productions’ Shakespeare CD Series and numerous audio cassettes including DISGRACE by Jim Coetzee, NIGHT WITHOUT END by Alistair Maclean, WINDFALL by Desmond Bagley,THE SPIRITUAL TEACHINGS OF YOGA and LIFE AND TIMES OF MICHAEL K. Most recent voice work includes:
| 2009 | THE ALEXANDRIA QUARTET: JUSTINE, BALTHAZAR, MOUNTOLIVER & CLEA | Reader | George James | Audible.com | |
| 2009 | THE BLACK CLOUD | Reader | George James | Audible.com | |
| 2008 | THE BLUFFERS’ GUIDES | Reader | Nikki Banks | Audible.com | |
| 2007 | IN THE EVIL DAY | Reader | Jenny Leow | Quercus Books | |
| 2005 | LIFE AND TIMES OF MICHAEL K | Reader | Kimberley Delius | BBC Audio Books |
Jack is trained and certificated at Teaching English as a Foreign Language (TEFL) and in 2010 was appointed Head of the Science Channel and Debates Author for Intelligence Squared.
He is from South Africa and has an excellent ear for accents including Afrikaans, RP, Russian, Eastern European, US, Scandinavian and Australian.