In 2006 he appeared in two British Shakespeare Company productions; A Midsummer Night's Dream and Romeo and Juliet alongside Wayne Sleep, Mina Anwar, Sean Brosnan and David Davies.

[10][11][12] He is the youngest person to play the title role of Prospero in London theatre, in the 2013 Watford Palace production of The Tempest.

In 2014 he appeared in the 4-hander triptych piece Symphony written by Ella Hickson, Nick Payne and Tom Wells for Nabokov and Soho Theatre.

[14] Gerrard also works extensively as a voiceover artist and was nominated for a BAFTA for his film Walter Tull: Britain's First Black Officer.

In March 2024 he was nominated for an Audie Award in Hollywood for The Adventures of Finn MacCool & Other Irish Folk Tales which he edited and narrated.