I do a weekly Tesco shop, they are very well organised, I feel pretty safe there actually. Their CEO sends e mails asking those who can to go to the shops to free up online slots for those who have little alternative.
I wear gloves, wash my hands well when I come in, unpack the shopping, wash hands well again. I don’t isolate the shopping, and don’t wash my coat or clothes that I’ve worn.
I have always washed my hands thoroughly before handling food or cooking, and just carry on doing this. There’s only DH and me in the house, he hasn’t been out anywhere since lockdown, just the garden.
I plan to attend a blood donor session tomorrow, I’m sure they are taking every precaution and blood is still needed vitally.