Gillian trained at RSAMD and The Royal Academy of Music.

Theatre includes: Hairspray (London Coliseum); Sweeney Todd (Bergen National Opera); The Bridges of Madison County (Menier Chocolate Factory); Dr Faustess (Cockpit Theatre); Skellig (Nottingham Playhouse); The Last Ones (Jermyn Street); Spring Awakening (Hope Mill); Sunny Afternoon (Harold Pinter); The House of Mirrors & Hearts (Arcola); Happy Ending (Arcola); It’s a Wonderful Life (Bridge House); American Psycho (Almeida); Say It With Flowers (Sherman Theatre, Cardiff); Chess (Union); Sweeney Todd (Chichester Festival Theatre & Adelphi); Hairspray (Original UK Tour); Billy Elliot (Victoria Palace); Into The Woods (Royal Opera House); Blood Brothers (Phoenix Theatre & UK Tour); The Fulham Jesus (Baron’s Court); Fear of Trees (Old Red Lion); Carmen (New Vic, Stoke and Tour); Sweeney Todd and Paradise Moscow (Opera North); A Tale of Two Cities (Birmingham Alexandra); I Love You You’re Perfect Now Change (Comedy Theatre); The Rink (Orange Tree); Company (Manchester Library); Me & My Girl and My Cousin Rachel (Perth Rep); Macbeth (German Tour).

TV and Film includes: Dorcha (The Darkness) (Tharun Productions); Inside Balmoral (Ch5); Eastenders (BBC); Holby City (BBC); River City (BBC Scotland); The Bird (Segalovich Prods); Distant Voices (Film Oxford); Nothing in the Middle (NFTS/BFI); Emmi (Film Oxford/Fernie Films); Recovery (Met Prods); Bottleneck (Judah Prods); Growin’ Pains (Web Series); Revisited (NFS).