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James Fox as Sir Anthony Blunt |
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Prunella Scales as H.M.Q. |
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Geoffrey Palmer as Donleavy |
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David Calder as Chubb |
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Ann Beach as Mrs. Chubb |
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John Cater as Restorer (Robertson) |
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Edward de Souza as Collins |
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Jason Flemyng as Colin |
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Gregory Floy as Radiologist |
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Barbara Hicks as Lady at National Gallery |
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Anne Jameson as Blunt's Secretary |
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Mark Payton as Phillips |
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Julia St. John as Receptionist |
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Richard Bebb as Consultant |
| Writing | Alan Bennett | Writer |
| Directing | John Schlesinger | Director |
| Sound | Gerald Gouriet | Original Music Composer |
| Camera | John Hooper | Director of Photography |
| Editing | Mark Day | Editor |
| Production | Richard Broke | Executive Producer |
| Production | Innes Lloyd | Producer |
| Art | Barbara Gosnold | Production Design |
| Costume & Make-Up | Amy Roberts | Costume Design |
| Production | Noel Davis | Casting |
| Production | Anne Hopkinson | Casting |
| Production | Jeremy Zimmermann | Casting |
| Crew | Innes Lloyd | In Memory Of |
| Crew | St. John Gore | Thanks |
| Directing | Peter Stenning | First Assistant Director |
| Production | Daphne Phipps | Production Manager |
| Directing | Cecilia Coleshaw | Continuity |
| Directing | Tim Stevenson | Second Assistant Director |
| Directing | Teresa MacInnes | Second Assistant Director |
| Art | Christine Büttner | Graphic Designer |
| Art | Maura Laverty | Property Buyer |
| Art | Bronwen Grover | Assistant Production Design |
| Costume & Make-Up | Gillian Martin | Assistant Costume Designer |
| Costume & Make-Up | Heather Jones | Assistant Makeup Artist |
| Lighting | Brian Beaumont | Gaffer |
| Camera | Roy Russell | Grip |
| Sound | Julie Buckland | ADR Editor |
| Sound | Aad Wirtz | ADR Mixer |
| Camera | Robert Pascall | Camera Operator |
| Costume & Make-Up | Daphne Croker-Saunders | Makeup Designer |
| Production | Ian Hopkins | Associate Producer |
