When my children were very small, I took them, (from our home in Norfolk), to stay with my son's godparents, at RAF Cranwell, where they were stationed. This would have been in about 1969.
While we were there, my hostess organised a shopping trip into Sleaford with some of her friends. One of these was the mother of a three year old girl, who was due to be brought back from playgroup at three in the afternoon. Our shopping trip overran a little, and we were a few minutes late back.