The series takes place from 1854 to 1945.
This show was one of the first UK children programs made and transmitted in color. It debuted in September 1969, which was when UK networks ITV and BBC 1 & 2 mutually agreed to start making new shows and broadcasting them in color. However the majority of UK households only had monochrome TV sets at the time.
Location shooting was done on videotape, highly unusual for the era.
Location filming was done at Ripley Castle in Yorkshire,