The not-very-fancy Kent girls’ school I attended aged 11-18 retained one touching affectation circa 1979: the suggested stockist for school uniform was Harrods.

The new measures will limit the number of items unique to a school that have to be bought from designated suppliers.

The SST students have come up with a suit jacket, pants, and wrap skirt, button-down shirt, T-shirt, scarves, and a cotton ...