Doctor Who serial The Moonbase is set for release next year on DVD.
Tag "The Invasion"
There are currently over 100 episodes of Doctor Who missing from the BBC archives; most of them are from the William Hartnell and Patrick Troughton era of the sci-fi series. The Patrick Troughton era is particularly badly effected by missing episodes with only a handful of stories complete in the archives.
BBC Worldwide has revealed that the Doctor Who story The Tenth Planet will be released on DVD at the end of the year with its missing episode replaced by an animated version.