Editing Penelope Wilton (section)

===Television===
{| class="wikitable sortable"
|-
! Year
! Title
! Role
! class="unsortable" | Notes
|-
| rowspan="3" | 1972
| ''Thirty-Minute Theatre''
|
| TV series (1 episode: "An Affair of Honour")
|-
| ''Country Matters''
| Rachel Sullens
| TV series (1 episode: "The Sullens Sisters")
|-
| ''[[Play of the Month]]'': ''[[Mrs. Warren's Profession]]'' (BBC)
| Vivie Warren
| TV drama ([[George Bernard Shaw|G. B. Shaw]])
|-
| rowspan="2" | 1973
| ''The Pearcross Girls''
| Anna Pearcross/Helen Charlesworth<br>Julia Pearcross/Lottie Merchant
| TV series (4 episodes)
|-
| ''The Song of Songs''
| Lilli Czepanek
| TV drama
|-
| 1975
|''[[Play of the Month]]'': ''[[King Lear]]''
| Regan
| Shakespeare, d. [[Jonathan Miller]]
|-
| 1976
| ''[[The Widowing of Mrs Holroyd]]''
|
| TV drama
|-
| rowspan="3" | 1977
| [[The Norman Conquests|''The Norman Conquests: Living Together'']]
| Annie
| TV drama
|-
| [[The Norman Conquests|''The Norman Conquests: Round and Round the Garden'']]
| Annie
| TV drama
|-
| [[The Norman Conquests|''The Norman Conquests: Table Manners'']]
| Annie
| TV drama
|-
| 1980
| ''[[Play for Today]]''
| Helen/Virginia Carlion
| TV series (2 episodes: 1980–1981)
|-
| 1981
| [[Othello (1981 TV film)|''Othello'']]
| [[Desdemona]]
| Shakespeare (d. Jonathan Miller)
|-
| rowspan="2" | 1982
| ''The Tale of Beatrix Potter''
| [[Beatrix Potter]]
| TV drama
|-
| ''[[King Lear]]''
| [[Regan (King Lear)|Regan]]
| Shakespeare (d. Jonathan Miller)
|-
| 1984
| ''[[Ever Decreasing Circles]]''
| Ann Bryce
| TV series (27 episodes: 1984–1989)
|-
| rowspan="2" | 1986
| ''[[C.A.T.S. Eyes]]''
| Angela Lane
| TV series (1 episode: "Good as New")
|-
| ''[[The Monocled Mutineer]]''
| [[Lady Angela Forbes]]
| TV series (2 episodes)
|-
| 1990
| ''4 Play''
| Julia
| TV series (1 episode: "Madly in Love")
|-
| rowspan="2" | 1992
| ''[[Screaming (TV series)|Screaming]]''
| Beatrice
| TV series
|-
| [[The Borrowers (TV miniseries)|''The Borrowers'']]
| Homily
| TV series
|-
| 1993
| ''[[The Return of the Borrowers]]''
| Homily
| TV series
|-
| 1994
| ''Performance: The Deep Blue Sea''
| Hester Collyer
| TV series (2 episodes: 1994–1995
|-
| rowspan="3" | 1998
| ''This Could Be the Last Time''
| Marjorie
| [[Television film]]
|-
| [[Talking Heads (British TV series)|''Talking Heads 2'']]
| Rosemary
| TV miniseries (1 episode: "Nights in the Gardens of Spain")
|-
| [[Alice Through the Looking Glass (1998 film)|''Alice Through the Looking Glass'']]
| White Queen
| TV film
|-
| rowspan="2" | 1999
| ''[[Kavanagh QC]]''
| Barbara Watkins
| TV series (1 episode: "Time of Need")
|-
| [[Wives and Daughters (1999 TV series)|''Wives and Daughters'']]
| Mrs. Hamley
| TV miniseries (2 episodes)
|-
|rowspan="2"| 2000
| ''[[Beckett on Film#Rockaby|Rockaby]]''
|
| TV short
|-
| ''[[Victoria Wood with All the Trimmings]]''
| Mrs Cratchitt
| ''[[A Christmas Carol]]'' sketch
|-
| rowspan="3" | 2001
| ''[[The Whistle-Blower (TV series)|The Whistle-Blower]]''
| Heather Graham
| TV film
|-
| ''[[Victoria & Albert (TV serial)|Victoria & Albert]]''
| [[Princess Victoria of Saxe-Coburg-Saalfeld|Princess Victoria, Duchess of Kent]]
| TV film
|-
| ''[[Bob and Rose|Bob & Rose]]''
| Monica Gossage
| TV series (3 episodes)
|-
| 2003
| ''[[Lucky Jim (2003 film)|Lucky Jim]]''
| Celia Welch
| TV film
|-
| 2005
| ''Falling''
| Daisy Langrish
| TV film
|-
| 2005, 2008
| ''[[Doctor Who]]''
| [[Harriet Jones]]
| TV series; 4 episodes: ''[[Aliens of London]], [[World War Three (Doctor Who)|World War Three]], [[The Christmas Invasion]] and [[The Stolen Earth]]''
|-
| 2006
| ''Celebration''
| Julie
| TV film
|-
| rowspan="2" | 2007
| ''[[Five Days (TV series)|Five Days]]''
| Barbara Poole
| TV series (4 episodes) <br> Nominated: RTS Award&nbsp;– Best Actor
|-
| ''[[Half-Broken Things#Film adaptation|Half-Broken Things]]''
| Jean
| TV film
|-
| 2008
| [[The Passion (TV serial)|''The Passion'']]
| [[Mary (mother of Jesus)|Mary]]
| TV miniseries
|-
| 2009
| ''Margot''
| B.Q.
| TV film
|-
| rowspan="2" | 2010
| [[Agatha Christie's Marple|''Marple: They Do It with Mirrors'']]
| Carrie Louise Serrocold
| TV film
|-
| ''[[My Family]]''
| Rosemary Matthews
| TV series (1 episode: "Wheelie Ben")
|-
| 2010–2015
| ''[[Downton Abbey]]''
| [[List of Downton Abbey characters|Isobel Crawley (Baroness Merton)]]
| TV series
|-
| 2011
| ''[[South Riding (2011 TV series)|South Riding]]''
| Mrs. Beddows
| TV series (3 episodes)
|-
| 2012
| ''[[The Girl (2012 TV film)|The Girl]]''
| Peggy Robertson
| TV film
|-
| 2016
| ''[[Brief Encounters (TV series)|Brief Encounters]]''
| Pauline Spake
| TV series (6 episodes)
|-
| 2019–2022
| ''[[After Life (TV series)|After Life]]''
| Anne
| TV series (3 series)
|-
| 2023
| ''[[Murder is Easy (TV series)|Murder is Easy]]''
| Miss Pinkerton
| Two-part drama<ref>{{cite web|url=https://www.bbc.co.uk/mediacentre/2023/murder-is-easy-casting |title= Casting revealed for Murder is Easy, based on the classic mystery by Agatha Christie|website=bbc.co.uk/mediacentre|date=10 July 2023|access-date=28 July 2023}}</ref>
|-
| 2024
| ''[[Dead Hot]]''
| Francine
| TV series (6 episodes)
|}