The answer lies in the...

Today I have been mainly digging out the compost.

Oh! And today we had a surprise. We volunteered to participate in an Oxford University Covid-19 survey many months ago and had long assumed we were surplus to requirements. However, we had our first tests this afternoon, to be followed by repeats for the next four weeks and then monthly for a year. If we test positive (no information was available about the reliability of the test) our doctor will be notified, apparently.