Maybe so but you were still in Bradford. I believe that local papers in Leeds used "soccer" back then. They certainly didn't in Harrogate.
I aren't trying to imply that everyone called it soccer because generally most people said footy. But if someone said 'lets have a game of soccer' no one would throw their hands up and demand they call it football or something, it was common - and we were football fans. If there was some sort of stigma in calling it soccer I'm sure we wouldn't have used the term.
I also used to get books like 'Topical Times Soccer annual 1974' .....it certainly wasn't just a regional term.