Did you know that Jeremy Corbyn’s mother fought at the Battle of Cable Street? I know it’s a well-kept political secret, a bit like that one about Sadiq Khan’s dad being a bus driver, or that other one about Theresa May thinking Brexit means Brexit and wanting to make a success of it, but apparently it is true.

Speaking two years ago at the 80th anniversary of that street fight (one of not more than a mere 300 or so times he has mentioned it in public), the Labour leader said that the fight, for him, had “a deep personal significance”. I wonder how it feels for him, then, watching the children of his mother’s brothers and sisters in arms heading to Westminster. To protest,