Im really interested to see how the home testing kits work in the UK, i know the States are doing them to, are many other countries?. If they work its a really great break through and you would hope they get out to the majority of the population.
Ive been tested myself by a testing team - as its a prerequisite now in work. Not the nicest experience and more invasive then what the guidance shows on the NHS video, i wouldn't trust myself, to do it on myself and its really uncomfortable, so efficacy, competence and compliance would be a worry.
You dont pop them in the post do you - genuinely dont know? If so, seems a bit mad to pop potentially infected samples in the post.