This still upsets me. After several months of lockdowns and NOT advising the wearing of masks, the UK Govt changed its position (as reported on BBC - oops!) due to "political pressure" at the WHO.

At that time 14 July 2020 the govt published this on exemptions:

Summary.

- You can self-identify as exempt, no medical certification needed.

- An exemption card is provided here to print yourself.

- But wearing an exemption card "is a personal choice and is not required by law."

- No-one is permitted to challenge your decision not to wear a mask, whether or not you are carrying an exemption card.

In spite of this I found that I was in a TINY minority of people who never complied with the "mask mandate".