Masks: Brown line is UK, as is obvious on streets - can see in early March... Spain, France, US, Germany, UK all below 10% in mask usage - now 60-80%, except UK just over 20%.

Even at start April, UK & Germany same, but big divergence since... HT @jamesbarty

Clear that Government didnt want to make it mandatory/ divert health mask supply, but there was a moment at the beginning of May where the social norm might have changed, when guidance changed to encourage use, but the PM’s address to nation the night before did not mention it...

This is the source data YouGov/ Imperial polling project - latest number for UK is still well below others but is now at 31%

https://yougov.co.uk/topics/health/articles-reports/2020/06/04/covid-19-britons-still-wont-wear-face-masks

Here’s the point about the non-establishment of a new social norm around face coverings & masks in UK - YouGov/Imperial poll of 1000, 831 non-wearers showed that half felt, “silly”, “embarrassed” or “self conscious that others might judge you”...