Peggy Batchelor
From Tardis Wiki, the free Doctor Who reference
Peggy Batchelor (26 November 1916-18 July 2020)[1] played the Kingmaker in the webcast Death Comes to Time. She died at the age of 103, making her the longest-lived person associated with the Doctor Who franchise.
She was also the fourth actor from Doctor Who to reach their 100th birthday, after Lewis Alexander, Zohra Sehgal and Olaf Pooley. When she died, having been predeceased by Earl Cameron, Arnold Yarrow became to oldest surviving actor from the series.
