She was a presenter for Wish You Were Here? from 1991 to 1996, appearing in eight episodes in total.
Durham has done some screen acting, most notably in the 1987 film Wish You Were Here, which starred Emily Lloyd and Tom Bell.
Cassidy achieved his greatest success as a musical performer on Broadway, appearing in Alive and Kicking, Wish You Were Here, Shangri-La, Maggie Flynn, Fade Out - Fade In, It's a Bird...It's a Plane...It's Superman, and She Loves Me, for which he won a Tony Award.
Her film roles include parts in Whoever Slew Auntie Roo?, 10 Rillington Place (where she played Ethel Christie, the wife of serial killer John Christie), Young Winston (as Winston Churchill's nurse), Wish You Were Here (seen as Lynda's aunt Millie).
In 2008, she joined Mark Durden-Smith on Wish You Were Here...? Now & Then, a 25-part series where the hosts revisit destinations, originally visited by Judith Chalmers (Mark's mother) and other WYWH? presenters in the original 1974 series, to see how much they have changed.
The escape can take the form of a journey to another place such as the USSR in Letter to Brezhnev (1985) and Greece in Shirley Valentine (1989) or education as in Educating Rita (1983) and sexual initiation as in Wish You Were Here (1987).