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.
theLogBook.com
https://www.theLogBook.com
Earl Green is the creator, curator, and head writer of theLogBook.com.
Also of interest...
The Evil Touch: Happy New Year, Aunt Carrie
October 14, 1973
Doctor Who: Terror Of The Zygons Part 4
September 20, 1975
Lost In Space: The Android Machine
October 26, 1966