By the ONS (Office for National Statistics).
We had the invitation out of the blue a few weeks ago.
It involves a weekly self test at home for a month, followed by once a month for a year.
Someone phones to make an appt., brings the test kit, we do it in 5 mins, and hand back. (She waits outside.).
We’ve done 3 so far.
Apparently the survey is going to be extended to include a lot more people, so I was wondering whether anyone else is doing it, or has been asked.
You do get vouchers to spend in various shops (you can choose) for participating.