The Changes: The Cavern
The tenth and final episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Keith Ashton. Oscar Quitak (Brazil) guest stars. The series was filmed in 1973, but has been held for broadcast until 1975; an entire generation of young viewers will go on to consider the short series a seminal event in UK genre TV. 
The Changes: The Quarry
The ninth episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Keith Ashton. Tom Chadbon (Doctor Who, Blake’s 7) and Oscar Quitak (Brazil) guest star. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: Lightning!
The eighth episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Keith Ashton. Tom Chadbon (Doctor Who, Blake’s 7) guest stars. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: Heartsease
The seventh episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Keith Ashton. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: A Pile Of Stones
The sixth episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Keith Ashton. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: Witchcraft!
The fifth episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Marc Zuber. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: Hostages!
The fourth episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Marc Zuber. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: The Devil’s Children
The third episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Marc Zuber. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: The Bad Wires
The second episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Marc Zuber. The series was filmed in 1973, but has been held for broadcast until 1975.
The Changes: The Noise
The first episode of The Changes airs on BBC1, adapting the novels of Peter Dickinson into a ten-part television serial starring Vicky Williams and Bernard Horsfall. The series was filmed in 1973, but has been held for broadcast until 1975. Hear about it on the Sci-Fi 5 podcast