Asked on Sky if you can catch Covid from your friends, Javid said: "People should consider wearing masks in crowded places when they are with strangers, when they are with people that they are not normally spending time with."

SNP MP Stephen Flynn asked vaccines minister Maggie Throup whether that advice had been backed up by science. She confirmed Public Health England had not made a comparative assessment about transmission rates between people who know each other and those who don't.

What a surprise!