A Grown up child
Doctor Who producer Verity Lambert reveals her thoughts on the Doctor's personality, and William Hartnell's take on the character.

Forgetting the lines
William Hartnell frequently forgot his lines. As Clive Doig, vision mixer on early Doctor Who stories tell us, it was immensely important for William's co-stars to support him back to the script.

Hartnell's perseverance
William Hartnell's deteriorating health was to see The Three Doctors as his last outing as the travelling Timelord. It was uncertain whether he could commit to filming but with William's determination and some slight script amendments, he was able to take part in the tenth anniversary special.