An estimated two out of five (41%) over 80s who had received the first dose of a vaccine less than three weeks ago reported they had met someone other than a household member, care worker or member of their support bubble, indoors; this appears to contradict lockdown regulations
Dd2's just received a request to do a random test. I've just been through the survey for her to do it. It's got things like "are you currently working in..." and it includes education.
Well, do I put yes or no?
She doesn't "work" there . She goes to school, whether she works or not we could debate 
.
But currently she's not in.
But she will be in when she does the test (next week or the week after).
You could argue for either answer.
So I would be a little bit sceptical as it depends on what they've asked.
If they've asked "have you seen anyone inside face to face?" people might well answer "yes", for example when they've answered the door to the postman. They're inside. The postman is 2m away outside, and probably only stayed long enough to wave and walk away.
If they've asked "if anyone has been into their house (or they've gone into another person's house" and stayed for 15 minutes or more. That becomes a different question.