Donald Sutherland was active as an actor whilst being in England. "Gideon's Way" was just one of many roles he played at the time.
This episode has 50 minutes without commercial adds.
The museum shop is selling postcards for 4d & 6d, 4 pennies and 6 pennies in modern terms. At this time Britain was not using the decimal monetary system and pennies were always marked as d, from the Latin word denarius.