The government is flailing about wildly trying to solve the shortage of teachers (Hey, how about treating current teachers well enough that they don't want to quit? No?), we've had Troops to Teachers, Old People to Teachers, they're looking at TAs to Teachers and People Without A Degree to Teachers. They've now hit on a sure-fire solution.
PE is one of the rare subjects that isn't struggling to recruit, so they're going to set up a route that officially trains PE teachers to teach PE, but also expects them to teach any Ebacc subject they have an A-level in.
This has always gone on unofficially, but now, for these teachers it will be an expectation.
Because the skills needed to teach PE are just the same as those needed to teach Maths or MFL 
schoolsweek.co.uk/pe-teachers-lured-into-shortage-subjects-via-new-plan/