Kellie was born in Croydon and lives in SE London. She started her career via the National Youth Theatre and the BRIT school.
She can currently be seen playing 'Kirsty', in the award-winning comedy series (1 - 3) In The Long Run (Sky One / Now TV / Starz) created by Idris Elba.
Recent TV work includes Meet The Richardsons (ITV), Death In Paradise (BBC), Keep Calm And Carry On (Amazon Prime), Biff And Chip (BBC S1&2), Call The Midwife (Netflix / BBC), True Horror (Channel 4), and the BAFTA-winning series Joe All Alone - where she played series regular 'Stacey'.
Kellie is probably best known for playing 'Carly Wicks' in Eastenders, clocking up over 200 episodes between 2006-2012.
Other TV work includes The Office Christmas Specials, 3-part BBC 4 drama: Twenty Thousand Streets Under The Sky and The Marriage of Reason and Squalor (Sky Arts).
Her film work includes Bull (Signature), Benediction (Emu), Baby Boy (Film 4/House 38), King of Thieves (Studio Canal), Wimbledon (Working Title), Venus (MiraMax) and Heidi (Piccadilly Pictures).
Kellie plays the central role of 'Rachel' in short film Who's The Daddy which was selected for Best World Short at the recent Galway Film Festival.
For theatre Kellie has worked for The RSC, National Theatre, Theatre Royal Haymarket, Royal Court, The Park Theatre, London, Soho Theatre, ATG, Lyric Hammersmith. She played the role of 'Pauline Clench' in the International tour / West End of the National Theatre's hugely successful comedy One Man Two Guvnors directed by Nick Hytner.
She is an ambassador for the charities Anthony Nolan and Mencap.