We have begun a nationwide search to locate 31 missing episodes of the first science show ever to be broadcast on UK national television.

We are asking people across the country and beyond to search the long-forgotten contents of dusty attics or little-used store cupboards, to help unearth past series of the CHRISTMAS LECTURES from the Royal Institution, described by Sir David Attenborough and other past Christmas Lecturers as ‘national treasures from a golden age of broadcasting’.

We are in the process of making the entire BBC archive of these broadcasts available on our website for the first time. However 31 episodes broadcast between 1966 and 1973 are missing. Included in the missing episodes is footage of Sir David Attenborough not seen since it was first broadcast live nearly 50 years ago.

The CHRISTMAS LECTURES have been delivered every year since 1825, making them the longest running series of scientific lectures in the world. They were the first science programme broadcast on the BBC, in 1936, and having featured on TV every year since 1966 they are also the second-longest running continuously broadcast science TV show. The CHRISTMAS LECTURES aim has always been to present an accessible and entertaining way to engage with science.

While the missing Lecture episodes are officially ‘believed wiped’, the BBC and the Ri believe copies may exist somewhere, made during the earliest days of video recorders.