Consider yourself an expert on all matters Gallifreyan? Take a look at these barely credible 'facts of Who-bris'.
A prototype radio-controlled Prime-8 was built but proved too bulky and 'bloody silly-looking' according to one insider, so the idea was shelved. Prime-8 was later sold off to ITV, where he finally made it on to our television screens as Metal Mickey.
The former O-Man Big off of Jigsaw is said to have clinched the part of the Raston, ahead of Wayne Sleep and the man who played Mr Claypole in Rentaghost, by turning up to the audition already clad in his own silver leotard.
Van Der Who?
Despite Foster's physical resemblance to Pertwee and eagerness to embrace the physical requirements of the role, BBC executives were uneasy with the hastily rewritten script of The Sea Devils, in which the Doctor declares to Jo Grant that a chance neutron discharge from the TARDIS console has caused his facial molecules to 'temporarily freak out', and instead chose to wait until Pertwee was well enough to continue in the role. Unaired footage of the infamous Foster episode of The Sea Devils has never been seen by the public.
The Bill Makers
The main plotline would involve the Doctor being mistaken for a leading Whig pushing to ratify the Bill of Rights, while Ben and Polly would become bound up in the drafting of the Stamp Duty laws and founding of the Bank of England respectively. Produce Verity Lambert took one look at the script, declared it to be 'even duller than Marco Polo', and ordered that it be replaced by 'something with space people'.
Nativity of the Daleks
Among them is said to be Nativity of the Daleks, a Christmas-themed story in which the Doctor discovers his perennial nemeses using Skaro's Book of Exterminus to meddle with Earth history in first century Galilee. Having engineered the creation of Dalek Jesus, His Holiness Pope Davros revels in triumph but his plan is ultimately undone when the Doctor travels back in time and bombards the Three Wise Daleks with the reverse-polarity chords he has inserted into Slade's Merry Xmas Everybody.