The six-minute Nationwide segment, filmed in 1971 or 1972 at Bircham Newton, in north Norfolk, was thought to be lost for decades until it was uncovered by ghost researcher Dr Paul Lee at the British Film Institute.

The Bircham Newton site is now home to the Construction Industry Training Board (CITB).

The black-and-white report includes a recording of strange noises inside a sealed squash court, which left a BBC sound expert "perplexed".

Dr Paul Lee has found a long-lost BBC tape........

© Eastern Daily Press