Two missing episodes of Doctor Who from the 1960s have been found among a 'ramshackle' collection of vintage films.
The two episodes, The Nightmare Begins and Devil's Planet, were from the third series entitled The Daleks' Master Plan.
They starred William Hartnell as the Doctor and Peter Purves as his companion Steven Taylor, as well as Nicholas Courtney as Bret Vyon, Adrienne Hill as Katarina, and Kevin Stoney as Mavic Chen.
The stories, which were written by Terry Nation, hadn't been seen since they aired on TV in the UK and were assumed to be lost forever.
But charitable trust Film is Fabulous! discovered them in a private collection and, after BBC Archives worked to restore the original 16mm telerecordings, they will now be available on BBC iPlayer in a few weeks.
Director of BBC Archives, Noreen Adams, said of the exciting news: 'We're thrilled to have worked with the team at Film is Fabulous! to bring these lost Doctor Who episodes to viewers on BBC iPlayer this Easter.'
These are the first of the lost Doctor Who episodes to be announced to the public since 2014.
The Nightmare Begins, which aired in November 1965, was then followed by Devil's Planet on our screens two weeks later.
The intervening episode, Day of Armageddon, was discovered by a former BBC engineer in 2004, but much of the 'dark and gritty' storyline is still missing after it was ordered to be wiped.
The Daleks' Master Plan was not sold overseas after censors in Australia and New Zealand deemed it too violent, so it wasn't seen as profitable to sell the rights to other markets.
With the move towards colour broadcasting, the black and white story wasn't thought to have much future value, so was consigned to the bin.
But some episodes were still made by technicians to check for potential problems that would need fixing before being pitched elsewhere.
These tapes made their way to an amateur collection, and FIF's chair of trustees Professor Justin Smith explained they were donated to the charity after an anonymous late collector passed away.
The collector's films largely focused on his love of trains and canals, including hundreds of home videos.
The professor explained: 'We travel all over the country to recover film collections from private hands.
'A lot of the films had suffered water damage and the cans had corroded.
'These are gems in what was an eclectic and ramshackle collection, a lot of which hadn't been looked after, as well as the Doctor Who.
'The collector did recognise what he had, but how he acquired them has been lost to time.'
Cast member Peter was invited to a special screening of the episodes in Leicester on 11 March (Wednesday) - and he had no idea he was going to be treated to watching the episodes.
The 87-year-old actor was tearful when he discovered why he was actually there, after arriving for what he expected was going to be interviews with the media about television in the 1960s.
He confessed: 'I'm speechless, knocked out' and later added: 'My flabber has never been so gasted.'
The cast member explained that he had 'never forgiven' the Beeb for losing the episodes.
Sharing how he felt about seeing the instalments, he added: 'I'm not sure I even saw those programmes go out originally - I remember the stories, but having seen them, the pictures are unfamiliar to me.'
'I didn't remember the first one when I was still almost comatose following the injury I received fighting in Troy in the wonderful Mythmakers - which of course is missing.'
A special screening of the two episodes organised by FIF, with Peter as guest of honour, is being held in London on 4 April to coincide with them appearing on BBC iPlayer.