Riding bicycles over hilly tracks, wading through rambling streams and with children excitedly running off in different directions, they look like an ordinary family enjoying a day trip to the countryside.

Yet these are the home videos of Fred and Rose West - Britain’s most notorious and sadistic serial killers.

The eerie footage, seen publicly for the first time, features in Netflix’s new three-part documentary which goes behind the scenes to reveal how the depraved couple’s horrific crimes were uncovered.

The extraordinary family archive appears alongside chilling police footage of the moments West began giving up the secrets of 25 Cromwell Street in Gloucester.

Over a series of visits, West coldly points out where he has hidden the bodies of the vulnerable young women who were held captive, raped and tortured at the infamous address which would become known as the ‘House of Horrors’.