He is known for roles such as Jim Hawkins in Return to Treasure Island (1986), Bellboy in Doctor Who serial The Greatest Show in the Galaxy (1988), Marcellus in I, Claudius (1976), Marius in Les Misérables (1978), Ken Hodges in the medical drama Casualty (1993), and voicing Frodo Baggins in The Lord of the Rings (1978).
A long list of credits include appearances in Dixon of Dock Green, Z-Cars, Secret Army, Shoestring, The Professionals, Lovejoy, Bugs, Poirot, The Bill and Doctors.
He demonstrated his singing ability in the film version of Stephen Sondheim's A Little Night Music (1977) in the role of Henrik Egerman alongside Elizabeth Taylor.
[2] Guard's on-screen debut came aged 12 as the young David Copperfield in BBC television's 1966 serial adaptation of the Charles Dickens novel.
The next thing I knew, there were four big, fat BBC scripts on the doormat and I was learning the lines and rehearsing in an old church hall and working with amazing people like Joss Ackland.
[6][7] The late seventies and early eighties were a busy time for Guard with appearances in Shoestring, The Professionals and leading roles in period costume dramas such as My Cousin Rachel (1983) by Daphne du Maurier and A Woman of Substance (1985) written by Barbara Taylor Bradford, Guard worked alongside Jenny Seagrove, Deborah Kerr and Liam Neeson.
[10] The episodes were filmed in Dorset and famously at the BBC Elstree Centre using the car park to house the large circus top.
"[11] From September 1993, Guard played the role of Clinical Nurse Specialist Ken Hodges in long-running BBC drama, Casualty.
[12] As a musician and songwriter Guard has written award-winning songs and his bands Leapfrogtown[13][14] and What the Fox[15] have played festivals supporting Toploader and venues such as The Troubadour and Ronnie Scott's Jazz Club.
This included collaborating on Candy Guard's animated series, Pond Life for Channel 4 (1996 and 2000) and recently contributions to the soundtrack for the film 'Mercy' (2020), directed and written by Wendy Morgan.