Douglas grew up on an Essex council estate, read Drama & Theatre Arts at The University of Birmingham and trained on the Regional Theatre Young Director Scheme, the Royal National Theatre Studio Young Directors's Programme and the Clore Leadership Short Course

Douglas is the Artistic Director of the Queen's Theatre Hornchurch, was an associate of Complicité 2004 - 2010, founder of the national touring theatre company Transport 2010 - 2017, a freelance director and a selector for the National Student Drama Festival 2011 - 2016.

He has directed Shakespeare, comedy, modern classics, new writing, actor-musician musicals, large scale community work, digital performance, and pantomimes. He has devised work for young people and LGBTQI+ and refugee focused productions. His script Elegy won a National Theatre Foundation Playwright Award and his work has received 18 Off West End Awards nominations, a What's On Stage Award nomination, a Broadway World nomination and a Freedom of Expression Award nomination. QTH won the London Theatre of the Year Stage Award 2020.

Productions as a director include: As You Like It (QTH and National Theatre Public Acts); Abigail's Party (QTH, Salisbury Playhouse, Derby Theatre and Les Théâtres de la Ville de Luxembourg); Macbeth (QTH and Derby Theatre); The Crucible (QTH, Les Théâtres de la Ville de Luxembourg and Selladoor); Made in Dagenham and Rope (QTH and New Wolsey Theatre); Tales from the Thames, Misfits, In Basildon, The Hired Man, Here I Am, Much Ado About Nothing, DNA, Priscilla Queen of the Desert, Christmas Allsorts, Robin Hood, 'Twas the Night Before Christmas (QTH); Dardanus (English Touring Opera); Europe (Barbican and Dundee Rep. Theatre); State Red (Hampstead Theatre); The Summer Book and 'Twas The Night Before Christmas (Unicorn Theatre); Jonny Woo's East London Lecture (Shoreditch Town Hall); The Deep Blue Sea, All My Sons and Of Mice and Men (Watermill Theatre); Touched (Trafalgar Studios); Elegy (Transport and Theate503)1001 Nights (Transport/Unicorn Theatre); As You Like It (Transport, New Wolsey Theatre and Les Théâtres de la Ville de Luxembourg); Invisible and The Edge (Transport and New WolseyTheatre); Copenhagen, Much Ado About Nothing, The Taming of the Shrew, Second from Last in The Sack Race, Fen, Sharp Relief, Noël & Gertie and The Shakespeare Revue (Salisbury Playhouse); Private Lives and Travels with My Aunt (New Wolsey Theatre); King Lear (Creation); Closer and Design for Living (Les Théâtres de la Ville de Luxembourg). 

As an associate director: A Disappearing Number, Endgame and Measure for Measure (Complicité); Julius Caesar (dir. Deborah Warner - Barbican), Fidelio (dir. Deborah Warner - Glyndebourne) and Testosterone (Rhum and Clay).As a writer/deviser:1001 Nights and 'Twas the Night Before Christmas (Unicorn Theatre), The Edge and Elegy (Transport Theatre). Elegy has received productions in Spain, Mexico and Australia and is translated into Spanish. 

Christmas Allsorts, Sharon 'n' Barry do 'Romeo & Juliet'Sparky the Elf, 'Twas the Night Before Christmas and Love Letters (QTH).

He has directed and taught for Complicité, LAMDA, Guildhall School of Music & Drama, Mountview, Royal Welsh College of Music & Drama, University of North London, University of Hyderabad and Royal Central School of Speech & Drama.

He has dramaturged work for Soho Theatre, Hampstead Theatre, QTH, National Theatre Studio, Salisbury Playhouse, Transport and Complicité including work by Tena Štivičić, Athiha Sen Gupta, Sadie Hasler, Vicki Donaghue, Kenny Emson, Clem Garritty, Anne Odeke, Rhum & Clay, Jonny Woo, Guleraana Mir, and Zoe Lewis. 

Prior to all of this, he was an assistant director at London Bubble and the English Shakespeare Company, a script reader for Soho Theatre, the admin. assistant and then administrator at Complicité, an usher at the Royal Court Theatre, a box office assistant at the Royal Albert Hall and a marketing assistant at the National Theatre.