David Burton
From Tardis Wiki, the free Doctor Who reference
David Burton was a stage actor who claimed he had been cast (DWM 209) as the Doctor, in 1991.
He states he was filmed by a company in an independently-made pilot called Doctor Who and the Monsters of Ness. The pilot was sent to the BBC, and if they liked it, a Doctor Who reboot would have been made.
No independent evidence of Burton's claims has ever been produced, and there is no record of any such pilot ever having been made.