Gabriel's previous theatre work includes: Cyrano de Bergerac, The Driver’s Seat, Enquirer, Rupture for National Theatre of Scotland; Locker Room Talk, Spoiling, The Arthur Conan Doyle Appreciation Society, 15 Seconds at Traverse Theatre; Tartuffe, Between The Thinks Bubble and the Speech Balloon, Mums and Lovers for Oran Mor; Most Favoured for Oran Mor/Traverse Theatre; Under My Skin for Oran Mor/Paines Plough; Canned Laughter for ATG; Lovers at Cumbernauld Theatre Company; Threeway for Invisible Dot; Get Santa at Royal Court Theatre; The City, Bliss/Mud, Love Freaks at Tron Theatre; San Diego for Tron/Royal Lyceum Theatre; White Tea for Fire Exit; Macbeth for Theatre Babel/Hong Kong Cultural Centre; Strawberries In January for Paines Plough/Traverse Theatre; If Destroyed True for Paines Plough/Dundee Rep; Six Black Candles at Royal Lyceum Theatre; Burning Bright for V.Amp; Top Girls at New Vic Theatre; Mainstream for Suspect Culture/Bush Theatre; Outside Now for Prada Fashion House; Dissent for 7:84; The Gun for Wildcat; Grimm Tales at Leicester Haymarket Theatre; Trainspotting for G&J Productions.

TV and film includes: All Creatures Great and Small (Playground Entertainment); Avenue 5 (Jettison Productions Ltd); Patrick Melrose (Sky/Little Island Productions); Coronation Street (ITV Studios); Logan High (CBBC); Rubenesque (Kudos Productions); Gary Tank Commander, Rab C Nesbitt (The Comedy Unit); New Town (Pirate Productions/BBC); Taggart 93 Safer (SMG); Welcome to Strathmuir (Absolutely/BBC); PC Alisdair Stuart (BBC Scotland); Chewin the Fat (New Year Special), Still Game (BBC/Comedy Unit); Festival (Pirate Productions); The Karen Dunbar Show (Series 1-4), Chewing the Fat, Glasgow Kiss, Haywire, Life Support (BBC) and Life Support (STV).