MaJoC, I finally remembered the name of the UK TV series about family disputes about a will. It is called I, Jack Wright.

[A convoluted method for remembering was: woke up suddenly to a violent midnight thunderstorm, couldn't get back sleep, went to the computer, re-read some of the posts in this thread, finally tried to go back to sleep, then trying, trying to remember any of the actors' names in the show. Bingo! Gemma Jones and John Simm. Both brilliant as always. Apart from a couple of other actors whose faces were familiar, the rest were new to me. Then I finally went back to sleep.]