The publishers book description:
A determinedly clean image, with no betting and rival fans mingling on the terraces, made speedway the family night out of choice. The sport thrived despite punitive taxation and Government threats to close down the speedways as a threat to industrial productivity.
Even at the height of its popularity, speedway was a sporting edifice built on unstable foundations, which crumbled alarmingly as the 1950s dawned and Britain’s economic and social recovery brought competing attractions like television.”
The Golden Age of Speedway
By Phillip Dalling