Leigh is an AACTA nominated producer and writer who has worked across multiple storytelling genres, including film and television drama, comedy, and animation for the BBC, Netflix, ABC Studios International, ITV and Fremantle Media.

Leigh co-founded Moving Floor Entertainment with Stephen M. Irwin to bring their rich experience in the creation and production of high-quality scripted content to Australian and international screens. Moving Floor has a large and growing slate that spans diverse platforms and genres.  A core aspect of Moving Floor’s ethos is to provide springboards for diverse emerging creatives to hone their craft and, in the long term, build a diverse body of local storytelling talent that will continue to create world-class entertainment out of Queensland, Australia.

Leigh was co-creator, co-writer and co-executive producer of the hit drama series HARROW. The series was the first international drama production for the Disney-owned ABC Studios International, and stars Ioan Gruffudd in the title role. HARROW was nominated as Most Outstanding Drama Series at the 2018 Logie awards and ran for three successful seasons (2018-2021). It consistently rated in the top ten Australian drama series during its run.

In 2019, Leigh co-created the hit network Ten drama series, FIVE BEDROOMS, along with writers Michael Lucas and Christina Bartlett. The series ran for four seasons, and earned multiple industry nominations including the AACTA Awards and Logie Awards.

In 2018, Netflix ordered its first Australian original series, the supernatural crime drama TIDELANDS co-created by Leigh McGrath and Stephen M Irwin. Leigh also wrote and co-Executive Produced the series.

From 2011-2018, Leigh produced the Kriv Stenders feature film AUSTRALIA DAY starring Bryan Brown, SECRETS & LIES for Network Ten, which was nominated for an AACTA Award for Best telefeature or Miniseries. The show was later remade in USA by ABC Network starring Juliette Lewis and Ryan Phillipe. Leigh also produced the ABC comedy series THE STRANGE CALLS as well as the online drama series: VIKINGS: ATHELSTAN’S JOURNAL and TEXAS RISING: THE LOST SOLDIER for the US History Channel.

Leigh has worked extensively both locally and internationally as a Script Producer and Story Editor, including ITV’s long-running police drama series THE BILL. He also worked for the BBCwhere he was involved in the development of series ideas for commissioning. His UK credits include the Emmy Award-winning THE LOST CHRISTMAS starring Eddie Izzard, the BAFTA winning ROY, and ME & MY MONSTERS for Jim Henson Productions.

In 2025, Leigh produced the multi-award-winning web-series DESERTED (filmed on Minjerribah/Stradbroke Island), which starred Chinese-Australia actress Shuang Hu.