Garry's voice can be heard as Inspector Inspector Boyle in Smithers & Boyle Investigate for The Daily Step since 2012
He was also the Adrian Mole voice for the Barclays Bank commercial (series) 1987.
His voice can be heard as Simon Johnson in the Audiobook;
PRINCE WILLIAM: BORN TO BE KING -Heavy Entertainment (un credited)
Various film voice syncing
Pope Head: The Secret Life of Francis Bacon - Audiobook version 2014 - Various voices
Warhol: Bullet Karma - Podcast version 2020 - Various voices -"Roost’s fascinating voice takes centre stage." Broadwaybaby ****
Voice Reel Directed by Dylan Allcock Voicereels