Considering the new team's love of rejuvinating old characters, I'm guessing it was probably Romana. one time assistant, and last heard of as Galifrey President
The Tenth Doctor regenerates in the episode titled "The End of Time," which is a two-part special that serves as his final adventure. The first part aired on December 25, 2009, and the second part on January 1, 2010. In this episode, the Doctor confronts the Time Lord Lord Rassilon and ultimately sacrifices himself to save Wilfred Mott, leading to his regeneration into the Eleventh Doctor.
A. Grattan Hall has written: 'Doctor Wilfred Grenfell' 'Doctor Wilfred Grenfell' -- subject(s): Accessible book
Wilfred "Wilf" Mott.
James Cordon will be appearing in the eleventh episode of the current (2010) season, the working episode title is 'The Lodger' though that might not be the final title, which will air sometime in June. "The Doctor faces his greatest challenge yet - a flat share! People are disappearing on Aickman Road, and the Doctor must solve the mystery of a staircase that people walk up - but never down."
His name is Wilfred Mott.
Sir Wilfred Thomason Grenfell
Wilfred T. Grenfell has written: 'The story of a Labrador doctor' 'Adrift on an ice-pan' 'Forty years of Labrador'
The only Classic Doctor Who episode in which the Doctor had no companion is 'The Deadly Assassin'
The Doctor's Daughter was first, it is episode six of series four, Silence in the Library is episode eight.
According to a survey of Doctor Who fans the most popular Doctor Who episode was The End Of Time.
The weeping angels appeared in the doctor who episode Blink episode 10 of series 3 doctor who
The 10th Doctor, played by David Tennant, regenerates by absorbing a large amount of radiation while saving Wilfred Mott in the "Doctor Who" episode "The End of Time." This process causes him to regenerate into the 11th Doctor, portrayed by Matt Smith.