24 Hours in the Past is a BBC One living history TV series first broadcast in 2015. Six celebrities were immersed in a recreation of impoverished life in Victorian Britain. Each of the four episodes represented 24 hours living and working in four different occupations.A key part of the series was its immersive nature. The four episodes were ostensibly filmed in direct sequence, and the participants lived, ate and slept in the often filthy conditions portrayed.Living history has become a popular theme in recent UK TV series, usually involving Ruth Goodman and regular collaborators in a long-term series, filmed in intermittent episodes with a cast of historians. This series took a different pitch, using a continuous filming technique without the respite of hotels between episodes and cast with "the randomest collection of participants" to create an air of surprise at their conditions.