The antibody test mentioned by BlueBelle is a lab based test, not the type of home test the UK government was hoping to roll out, but which was found unreliable. Lab based antibody tests might be useful as part of a screening programme to find out what proportion of population has been exposed to virus.
Notanan is not confused between antibody and antigen tests.
A quote for those blessed with a spouse:
I hope the new PM is kind to Larry the Cat

