Did Gillian Keegan need to apologise? The Education Secretary thought her ITV interview had ended and she could speak frankly. She insisted the schools’ concrete crisis was down to ‘everyone else’ who had ‘sat on their arse’.

It was a fair point, inelegantly expressed. It’s been almost 25 years since the order first went out from Whitehall to inspect schools and hospitals for crumbling reinforced autoclaved aerated concrete (Raac).