In The Twelve Doctors, Ed is stated to be 24. In The Planet of Evil, he ages 700 years chronologically, but this is taken off the total age of Pluto instead, meaning he is still biologically 24, though technically 724 years old. In The Rebel Clocks, he ages 80 years, making him biologically 104, chronologically 828. His age is reduced in The Univerese's Oldest Man, but he still feels 104 inside, and attempting to return to Earth. By the end of the series, he is 828.