Gregg’s stage career began at the age of eight and has since included leading roles on some of the UK’s most celebrated stages.

In London’s West End he originated roles in Birdsong directed by Trevor Nunn, Shakespeare in Love at the Noël Coward Theatre, and Wolf Boy directed by Russell Labey and Robert Hastie. He earned critical acclaim in the title role of New Boy at Trafalgar Studios.

Gregg’s musical theatre credits include Pepper in the international tour of Mamma Mia!, and Peter Pan at the West Yorkshire Playhouse.

On screen, Gregg can be seen in X-Men: Days of Future Past, HBO’s Jett, Netflix’s Jupiter’s Legacy, and ITV’s Grantchester. His television credits further include Bomb Girls, Reign, Murdoch Mysteries, and Frankie Drake.

Gregg is also a prolific voice actor, contributing voice and motion capture to numerous AAA video games and animations.

He can soon be seen starring alongside David Harewood in the upcoming feature film In The Black, as well as the limited series Prophet of Ecstasy for CBC.