WHAT’S in your TV archive?
Mine dates back to the early 1980s and includes thousands of video recordings, as well as more recent DVDs and hard drives.
But in the 1960s, before the invention of cheap video recorders, tape was very expensive.
TV companies routinely wiped programme footage once it had been broadcast so the tape could be used again.
Many live TV shows also vanished as no-one saw the need to record them. Other recordings simply went missing.
Now a new four-part series has unearthed TV footage thought to have been lost forever.

Michael Parkinson, Bruce Forsyth, Rolf Harris and Bill Oddie are among those reunited with some of their earliest TV material.
Hardly anything of Granada show Scene At 6.30, which employed Parky as a young reporter, appeared to have survived.
But new four part ITV1 series Raiders Of The Lost Archive presents him with some hilarious clips from his early career.
Parkinson, now 71, is seen being tattooed and discussing liquorish and quoits from newly found 1962 editions.
There’s film of one of his first ever celebrity interviews, a rather awkward affair involving the actor Sir Laurence Olivier.
The series also includes a rare glimpse of Parky as a frightened war correspondent in 1967.
Rolf Harris is overcome with emotion when he’s presented with lost footage, including his first film appearance in 1955 – at the age of 25 – a film that Rolf has been trying to track down himself for decades.
He’s also seen talking to Stockport’s Joan Bakewell in a 1967 edition of BBC2’s Late Night Line Up.
Other highlights include rescued footage of Morecambe and Wise, Cliff Richard’s only straight acting TV role, Bruce Forsyth in 1968 on “Tarbuck’s Back” and material from The Goodies which turned up in Germany.
Max & Paddy’s Road To Nowhere star Paddy McGuinness reunites the stars with the early TV material when the new series begins at 10pm on Tuesday Jan 16.