Never-seen-before video and photos of members of the Royal British Legion meeting Adolf Hitler have been uncovered.

The footage shows the British delegation on a peace-mission to Germany in 1935, before the outbreak of World War Two.

Five Legion officials came face to face with Hitler at an unexpected meeting at his Chancellery and are seen shaking hands with his deputy Rudolph Hess.

During their trip, the Legionnaires were also taken on a tour of Germany's first concentration camp at Dachau before having supper with Himmler, the head of the SS.

They also met reconstructive surgeon Karl Gebhardt who, a year after their visit, joined the SS and later performed surgical experiments on inmates at Auschwitz.

Presented in a swastika-emblazoned leather-bound photo album, the photos were given to the Legion by the Third Reich as a memento of their trip.

The images and footage were recently unearthed at the bottom of a cupboard after the Legion moved headquarters in London.

:: The full story will be told in the documentary Wartime Secrets, which airs on Sunday, November 7, at 10pm, on the Discovery History Channel.