The so-called King of the North is set to challenge Keir Starmer to become the next prime minister. But in Manchester, he has ridden a wave first generated by two other unsung heroes, writes Chris Blackhurst B ack in the 19th century, Manchesterism was a thing. It was the term used to describe the anti-Corn Law campaigners, determined to free the working class from the stranglehold of landowners charging high prices for their wheat and grain. Expect to see it appearing more often, so much so