Gwyneth Strong (born 2 December 1959) is an English actress. She is best known for her role as Cassandra, the love interest and, later, wife of Rodney Trotter (Nicholas Lyndhurst), in Only Fools and Horses (1989-2003), and for playing Geraldine Clough in seven episodes of EastEnders in 2016. She has also appeared in Shadows (1975), Angels (1976), Crown Court and Z-Cars (both 1977), Play for Today (1980-1984) and Silent Witness (1996).
She was a regular in the children's TV series The Flockton Flyer between 1977 and 1979 as Jan Carter. Another of her early television appearances came in 1982 when she appeared as Carol Dalston in the Minder episode "Poetic Justice, Innit?".
Strong gained mainstream recognition as Cassandra Parry, the love interest and later wife of Rodney Trotter in Only Fools and Horses, debuting in the series' sixth season. She also appeared in the "Observation" segment about detective Samantha Smith made for the 1990 series of The Krypton Factor, the two-part drama serial The Missing Postman as WPC Rachel McMahon, the BBC drama Real Women from 1997 to 1998, as Hetty in ITV's Lucy Sullivan Is Getting Married (1999) and in the BBC drama Casualty in 2003 as Jim Brodie's wife Elizabeth.
Strong was featured in the television film It's a Lovely Day Tomorrow (1975), written by Bernard Kops and directed by John Goldschmidt, depicting the real-life drama of the Bethnal Green tube disaster in World War II. She also appeared in the "True Confessions" two-part episode of the series A Touch of Frost, reuniting her on screen with her Only Fools and Horses co-star David Jason.
She appeared on the West End stage in 2008 in the musical Our House, in which she played Kath Casey. In May 2010, Strong appeared in Midsomer Murders “The Made-to-Measure Murders” as Katie Soper. In 2011, Strong joined the cast of at the Aldwych Theatre.
In September 2016, she joined the cast of the BBC soap opera EastEnders, in the recurring role of Geraldine Clough, a rival darts player against the Queen Vic.
| 1973 | Nothing but the Night | Mary Valley | |
| 1980 | Dark Water | Jo | Short |
| 1982 | Sharon | ||
| 1985 | Bones | Andrea | |
| 1991 | Afraid of the Dark | Blind Mother with Baby | |
| 1994 | Thin Ice | Cath | |
| 1996 | Crimetime | Gwenda | |
| 2011 | In Love with Alma Cogan | Laura |
| 1974 | Cicely Eglinton | Episode: "The Escape" | |
| 1975 | Edward the Seventh | Minny | Episodes: "Alix", "A Hundred Thousand Welcomes" |
| 1975 | It's a Lovely Day Tomorrow | Jane Bell | TV film |
| 1975, 1978 | Shadows | Elizabeth, Honey Ann | Episodes: "The Other Window", "Honeyann" |
| 1976 | Angels | Evie | Episode: "Babes in the Wood" |
| 1976, 1980–81, 1984 | Play for Today | Carol, Anne, Penny Shepherd, Linda | Episodes: "Early Struggles", "Ladies", "The Factory", "Rainy Day Women" |
| 1977 | Crown Court | Sandra Petrie | Episodes: "A Matter of Faith: Parts 2 & 3" |
| 1977 | Jubilee | Madeleine Iverson / Tempe Iverson | Episode: "Age of Hypocrisy" |
| 1977 | Z-Cars | Janet Hurst | Episode: "Juvenile" |
| 1977–1978 | Jan Carter | Regular role | |
| 1978 | Breakaway Girls | Susan Watkins | Episode: "Alison Watkins" |
| 1980 | Bloody Kids | Jan | TV film |
| 1982 | Minder | Carol Dalston | Episode: "Poetic Justice Innit" |
| 1983 | Mr. Right | Gloria | TV film |
| 1983 | Spooky | Alice | Episode: "The Danny Roberts Show" |
| 1984 | Dramarama | Catherine | Episode: "Rachel and Rosie" |
| 1985 | Inside Out | Beverly Grabowski | TV series |
| 1986 | King of the Ghetto | Sadie Deedes | TV miniseries |
| 1986 | Paradise Postponed | Tina Kitson | TV miniseries |
| 1989–1996, 2001–2003 | Only Fools and Horses | Cassandra Trotter | Regular role; 21 episodes |
| 1991 | Shrinks | Sally Thornton | Episode: "1.6" |
| 1992 | Nice Town | Linda Thompson | TV miniseries |
| 1993 | Screen Two | Cynthia | Episode: "The Clothes in the Wardrobe" |
| 1994 | 99-1 | Charlotte | Episodes: "Doing the Business", "The Hard Sell", "Where the Money Is", "The Cost of Living" |
| 1995 | Mary Painter | Episode: "Compensation" | |
| 1995 | Casualty | Catherine Caldwell | Episode: "Battling On" |
| 1996 | Paul Merton in Galton and Simpson's... | Joyce | Episode: "Don't Dilly Dally on the Way" |
| 1996 | Silent Witness | Patricia Denning | Episode: "Darkness Visible" (2 parts) |
| 1997 | D.S.I. Bailey | Episode: "True Confessions" | |
| 1997 | Rachel McMahon | TV film | |
| 1998–1999 | Real Women | Janet Crossley | Main role |
| 1999 | Forgotten | Denise Longden | TV miniseries |
| 1999 | DI Richards | Episode: "Living on Risk" | |
| 1999–2000 | Lucy Sullivan Is Getting Married | Hetty | Regular role |
| 2003 | Casualty | Elizabeth Brodie | Episode: "First Impressions" |
| 2004 | Murder in Suburbia | Pat Dawson | Episode: "A Good Deal of Attention" |
| 2004 | Doctors | Dee | Episode: "Out of Control" |
| 2007 | New Tricks | Kim Newley | Episode: "God's Waiting Room" |
| 2010 | Midsomer Murders | Katie Soper | Episode: "The Made-to-Measure Murders" |
| 2013 | Casualty | Margaret Collier | Episode: "Family Matters" |
| 2013 | Dorothy | Episode: "A Copper's Tale" | |
| 2015 | TV film | ||
| 2016 | EastEnders | Geraldine Clough | Recurring role |
|- |2026 |Ceri Mayland |Current; recurring |}
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