
Diana Hardcastle (born July 12, 1949) is a British actress who has appeared largely in television roles. She is married to actor Tom Wilkinson, with whom she has two children.
She 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, she and her husband, Tom Wilkinson portrayed real life husband and wife Joe and Rose Kennedy in the mini series The Kennedys, and, in 2012, she had a supporting role in the film The Best Exotic Marigold Hotel in which her husband starred.

The Boy
2016 · as Mrs. Heelshire

If Only
2004 · as Claire

A Good Woman
2004 · as Lady Plymdale

Chromophobia
2006 · as Mrs. Wharton

Good People
2014 · as Marie Halden

The Second Best Exotic Marigold Hotel
2015 · as Carol Parr

The Best Exotic Marigold Hotel
2012 · as Carol Parr

Jenny's Wedding
2015 · as Ellen

Wonder
as Celia

Frankie and Johnnie
1986 · as Judith Walters

Resnick: Rough Treatment
1993 · as Claire Millinder

Sweetnightgoodheart
2005 · as Anthea

Love Song
1985 · as Young Phillipa Hatchard

The House
1984 · as Mrs. Janek