Lost Doctor Who episodes found – but owner is reluctant to hand them to BBC

William Hartnell in The Daleks in Colour, a new 75-minute colourised version of episodes from the first series, due to be shown on 23 November. Photograph: BBC

For Doctor Who-lovers they are the missing crown jewels: lost episodes of the first series of the TV sci-fi drama, shown in the 1960s. But now film recordings of not just one, but two of the early BBC adventures, both featuring the first doctor, William Hartnell, has been found in Britain by amateur sleuths.

The episodes, one featuring the Daleks, would offer viewers a chance to travel back in time without the use of a Tardis. But the Observer has learned that the owners of the rare, rediscovered footage are not prepared to hand it over to the BBC, even as the clock ticks down to the 60th anniversary of the show’s launch this month.