Diana Hardcastle

• Born — 1949 7 12 • Birthplace — London, England • Occupation — Actress • Years Active — 1982–present • Children — 2 Diana Hardcastle Wilkinson (born 12 July 1949) is an English actress who has appeared largely in television roles.

Hardcastle has appeared in episodes of Midsomer Murders, Inspector Lynley and Taggart. She played recurring roles in the series First Among Equals and Fortunes of War. In 2011, Hardcastle and actor Tom Wilkinson, her husband, portrayed real-life husband and wife Joe and Rose Kennedy in the mini series The Kennedys. In 2012, she had a supporting role in the film The Best Exotic Marigold Hotel, in which her husband starred (their characters did not interact), and a returning role in the 2015 sequel The Second Best Exotic Marigold Hotel. Wilkinson and Hardcastle again played husband and wife in Good People (2014) and played brother-in-law and sister-in-law in the television series Belgravia (2020).

• Year — Title — Roles — Notes • 1982 — East Lynne — Wilson — Television film • 1984 — The House — Mrs. Janek — Television film • 1985 — Love Song — Philippa Jameson Hatchard — Television film • 1983 — Reilly, Ace of Spies — Anna — Episode: "Anna" • 1984 — Charlie — Ainsworth's secretary — Episode: "Charlie Is My Darling" • 1986 — Screen Two — Judith Walters — Episode: "Frankie and Johnnie" • 1986 — First Among Equals — Louise Fraser — 9 episodes • 1987 — Fortunes of War — Edwina Little — 3 episodes • 1988–92 — That's Love — Patsy — 26 episodes • 1992 — Boon — Kate Newsome — Episode: "Message in a Bottle" • 1993 — Punchdrunk — Vikki Brown — 6 episodes • 1993 — Resnick: Rough Treatment — Claire Millinder — Television film • 1996 — The Tide of Life — Rona Birch — Episode: "No. 1.2" • 1997 — Midsomer Murders — Barbara Lessiter — Episode: "The Killings at Badger's Drift" • 1997 — Bugs — Elaine Harman — Episode: "Identity Crisis" • 1999 — The Bill — Ruth Watts — Episode: "Kiss Chase" • 1999 — Taggart — Mariah Strange — Episode: "Fearful Lightning" • 2003 — Holby City — Pam Wilkinson — Episode: "On the Inside" • 2004 — Rosemary & Thyme — Crystal — Episode: "The Gongoozlers" • 2006 — The Inspector Lynley Mysteries — Deborah Proctor — Episode: "Chinese Walls" • 2008 — Doctors — Penny Healey-Henderson — Episode: "Very Important Prisoner" • 2010 — Silent Witness — Mary Bradburn — 2 episodes • 2010 — Doctors — Pam Phillips — Episode: "Man in the Mirror" • 2011 — The Kennedys — Rose Kennedy — 7 episodes • 2012 — Doctors — Wendy Barron — Episode: "Reports of My Death" • 2012 — Holby City — Faith Pearson — Episode: "Eastern Promise" • 2012 — DCI Banks — Defence Barrister Vizard — Episode: "Innocent Graves: Part 1" • 2013 — Utopia — CIA Woman — Episode: "No. 1.2" • 2017 — The Kennedys: After Camelot — Rose Kennedy — 4 episodes • 2020 — Belgravia — Grace Bellasis — TV series • 2020 — Shakespeare & Hathaway: Private Investigators — Lady Athena Forbes-Allen — episode 3.5 "Thy Fury Spent"

Hardcastle was married to English actor Tom Wilkinson until his death in December 2023. They have two daughters, Alice, born in 1988, and Molly, born in 1991.

• Year — Title — Roles — Notes • 2004 — If Only — Claire • 2004 — A Good Woman — Lady Plymdale • 2005 — Chromophobia — Mrs. Wharton • 2011 — The Best Exotic Marigold Hotel — Carol Parr • 2014 — Good People — Marie Halden • 2015 — The Second Best Exotic Marigold Hotel — Carol Parr • 2015 — Jenny's Wedding — Ellen O'Leary • 2016 — The Boy — Mrs. Heelshire