Theatre includes: Katherine has had a long career with theatre seasons including the RSC and the Glasgow Citizens' Theatre as well as appearances in the West End in As You Desire Me and The Prime of Miss Jean Brodie. She appeared in Centreline's tour of A View from the Bridge and in TAG's Scottish tour of The Birthday Party.

Film includes: The Last Supper, Winter Solstice, A Small Deposit, Murder By Decree, The Hiding Place and Peter Hall's 1968 version of A Midsummer Night's Dream.

Television includes: Heartbeat, The Bill, Taggart, Midsomer Murders, Rumpole of the Bailey, Within These Walls, Angels, Just a Boy's Game, All Passion Spent, Down Where the Buffalo Go, Ghostwatch and Down Among the Big Boys.