The Changing Face of Doctor Who | How to regenerate a Time Lord
In 1966, William Hartnell stepped down from the lead role in the beloved science fiction series, 'Doctor Who'. Rather than simply recast the part, the production team came up with a solution that would ensure the series would run for years to come.
Discover what happens when one Time Lord hands over his TARDIS to the next. See early plans for the first 'new Doctor', Patrick Troughton, and discover how viewers reacted to the change. Photos also show the moments when new Doctors and their companions were unveiled and reveal those actors who narrowly missed out on becoming TV's favourite time traveller.

Viewers react coolly towards Tom Baker's debut as the Doctor.

A viewer sends in a letter of support for 'Doctor Who' actor William Hartnell.
Patrick Troughton's first appearance as 'Doctor Who' overshadowed by the Daleks.
The 'Radio Times' letters page receives a mixed reception to the new Doctor Who.
Patrick Troughton's first adventure as the Doctor gets a cautious response from viewers.
Promoting the new Doctor Who and 'The Highlanders'.
A memo outlines fresh companions and a new enemy for Doctor Who.
Jon Pertwee's Doctor Who graces the front cover of 'Radio Times'.
'Doctor Who' star Jon Pertwee shows off his new car.
Viewers share their thoughts on Jon Pertwee's first 'Doctor Who' story.
Viewers review Tom Baker's debut as the Doctor.
Introducing Peter Davison as the next Doctor Who.
A new timeslot for 'Doctor Who' isn't popular.
Viewers appraise Peter Davison's first year as the Doctor.
A dream come true for Doctor Who Number Six.
Audiences review Peter Davison's final year as the Doctor and Colin Baker's debut.
'Doctor Who' takes over the back page of 'Radio Times'.
Sylvester McCoy faces harsh criticism from the viewers.
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