He has worked with Academy Award-nominated composer Patrick Doyle in the music departments on Disney’s ‘Artemis Fowl’ and Sony Pictures’ ‘All Is True’, both directed by Sir Kenneth Branagh, and collaborated with composer-director Sally Potter on her score for ‘The Roads Not Taken’.

Recently, Gareth orchestrated the strings for Charli XCX’s album ‘Wuthering Heights’, written for Emerald Fennell’s highly anticipated 2026 film of the same name. He was the orchestrator for the upcoming ‘Rivals (Season 2)’ for Disney+, scheduled for release later this year.

He was the orchestrator for Big Talk Productions’ BAFTA-nominated ‘Ludwig’, starring David Mitchell, collaborating closely with the composers to reimagine some of Beethoven’s most famous works. He also orchestrated the inventive, contemporary score for the dark comedy feature ‘The Shallow Tale of a Writer Who Decided to Write About a Serial Killer’, which premiered at the 2024 Tribeca Film Festival.

Additionally, Gareth was the orchestrator for the Chinese–Hong Kong crime drama ‘She’s Got No Name’ and provided additional orchestration for Natalie Holt’s BAFTA-nominated ‘Loki’ Season 2 score. Prior to this, he was the orchestrator for Sky Cinema’s ‘This Is Christmas’ (original score by Christian Henson) and was Music Researcher and Classical Music Arranger for Searchlight Pictures’ biographical drama ‘Chevalier’.

Gareth has worked with BAFTA on several occasions, composing music for new television scripts showcased at BAFTA Rocliffe events.

He regularly collaborates with commercial artists, creating arrangements for Grammy Award-winning artist Rick Springfield’s latest tour (also featured on Springfield’s ‘Orchestrating My Life – Live at the Saban’ DVD), and arranging brass for the forthcoming EP by scoring trio Zero VU (HBO: ‘Tuff Money’, Sky Cinema: ‘The Drifters’).

In 2020, Gareth released ‘After Midnight’, written for the Santa Barbara Symphony’s ‘Sundays With The Symphony’ concert series.
Gareth graduated with a Masters in Composition for Screen from the Royal College of Music, where he studied as a John Barry Scholar.