His other television credits include The Man From Snowy River, the series, Newlyweds, E Street, State Coroner and Wintertime for the Australian Broadcasting Corporation.
He played Older Patrick in Mame, Greg Connell in the world premiere of The Boy From Oz, Prince Charming in Cinderella, and as Ovington in How To Succeed in Business Without Really Trying.
In October 2003, Grieve went to England to play the role of Gaston in Beauty & The Beast, and has since performed in the London premiere of Europe by Australian playwright Michael Gow at the Finborough Theatre, and in a showcase of the new musical Paradise by the Dashboard Lights.
In 2006, he guest starred as James Clarke, a Forge operative, in the Doctor Who audio adventure, The Gathering and then as Major Brogan in the spin-off series I, Davros: Innocence.
In February 2007 Grieve made a television comeback when he landed the role of farrier Jonny Foster in the rural-based British soap opera Emmerdale.