Tristram trained at Central School of Speech and Drama.
Theatre credits include: Fracked! Or: Please Don't Use The F-Word (Chichester Festival Theatre); Feed The Beast, Anna's Room and Hamlet (Birmingham Repertory Theatre); This May Hurt A Bit (Out of Joint); Cause Célèbre (Old Vic); Pygmalion (Chichester Festival Theatre); David Copperfield (Mercury Theatre); The Fastest Clock In The Universe (Naach Theatre); Nothing (East 57th St Theatre); David Copperfield (West Yorkshire Playhouse); Hamlet (Barbican/Thelma Holt No1 Tour); The Tempest (Barbican/Thelma Holt No1 Tour); Semi-Monde (Lyric Theatre); Lady Windemere's Fan (Apollo); A Midsummer Night's Dream (New Shakespeare Company); The Collaborators, Phedre, Much Ado About Nothing, Richard III, The Duchess Of Malfi and The Critic (National Theatre); The Wild Sargasso Sea, The Tempest, The Cherry Orchard, Dance Of Death, Mozart's Nachtmusik, Two Way Mirror, Pal Joey, Macbeth, The Millionairess, Widower's House, Hamlet, The Bar Of A Tokyo Hotel, 'Tis Pity She's A Whore, Phaedra, A Tale of Two Cities, Enrico IV and Mrs Warren's Profession (Glasgow Citizens Theatre).
Television credits include: Lucan (ITV); Call The Midwife, EastEnders, Nuclear Race, Thin Air, Victoria Wood Play and Mrs Warren's Profession (BBC); Midsomer Murders (Bentley Productions); Getting Out Alive (Raw Television); Hollyoaks (Lime Productions); Joe's Palace (Talkback Thames/BBC); Hustle (Kudos); Ghost Ship and Haggard (Yorkshire Television); Kavanagh QC (Central Television); Sharpe (Carlton) and Jenny's War (HTV).
Film credits include: The Cold Room (Cold Room Productions); Good And Bad At Games (Portman Quintet Productions) and Another Country (Castlezone Ltd).