Began his career in 1961 at Hythe Summer Theatre and then trained at Central from 1961-1964, where he won the Wiliam Poel Prize for Verse Speaking. Since then he has played in over 150 productions at many leading Repetory Theatres. He was a member of Sir Laurence Olivier's National Theatre Company at the Old Vic from 1968-1972 and a member of The RSC in the 1995-1996 Season.He has appeared in many Corporate Videos and voiced a number of documentaries for The BBC. His Films include 'Adolf Hitler My Part in His Downfall', 'Flash Gordon' and 'Jesus Of Nazareth', as well as numerous Television appearences, most recently as Taylor in 'Downton Abbey'.
Lionel was last seen on stage as 'Guiseppi Rossi' in ‘Christmas', at the White Bear Kennington. A play written by Simon Stephens who adapted ‘The Curious Incident of the Dog in the Nighttime’.
"There is fine support too....................... particularly Lionel Guyett as Guiseppe the old Italian barber who has been around too long and seen it all" The Stage - December 2014
Lionel was also recently seen as part of Mark Rylance's and Shakespeare's Globe Sonnet walks.