Lewis Alexander
From Tardis Wiki, the free Doctor Who reference
Lewis Alexander (27 August 1910-23 October 2010[1]) had two uncredited roles in Doctor Who: as a senior Army officer in The War Machines (DWM 185) and an android villager in The Android Invasion. (DWM 193)
He was the first person associated with Doctor Who to reach the age of 100 and the oldest actor to have appeared in the series at the time of his death.
