Some episodes of ' ` Doctor Who '' believed to have been erased in 1960s are discovered . Footage shown at British Film Institute 's annual ` ` Missing and Wiped '' event . `` The Underwater Menace part two '' with Patrick Troughton , were bought at a school fete by former TV engineer Terry Burnett in the 1980s . BBC recorded TV programs in late 1960s , but videotape was usually used .
Some episodes of ' ` Doctor Who '' believed to have been erased in 1960s are discovered . Footage shown at British Film Institute 's annual ` ` Missing and Wiped '' event . BBC recorded TV programs in late 1960s , but videotape was usually used .