Timeslip is a British chilren's science fiction television series made by ATV for the ITV network and broadcast between 1970 and 1971. The series centres around two children, Simon Randall (Spencer Banks) and Liz Skinner (Cheryl Burfield) who discover the existence of a strange anomaly, known as the “Time Barrier” that enables then to travel in time to different historical periods in alternate pasts and futures. The two children have contrasting personalities; whereas Simon is studious, Liz is something of a tomboy and this often leads to conflict between the two. However, as the series progresses their antagonism matures into a deep bond of friendship.