Been speaking to an old colleague of mine and of course, subject turns into a corona subject. She was saying that as she doesn't have a mobile phone, she can't download the app any way and even if she could, she would never do it.
She also wouldn't get tested for covid if she had symptoms of it because it is a waste of time and just giving the government another statistic to cause more scaremongering media. She will still go and see her family and friends and nobody is going to stop her as she wants to live her life. (She's in her 60s). She's not going let the government tell her what she can and cannot do and she won't be told to stay indoors and 'self isolate'. If test and trace did manage to get hold of her which the only way is on her land line, then she would just hang up on them, etc and tell them to piss off 
I can't help but feel like I wish I was like her somewhat but as a healthcare worker I have to put other people's health before my own therefore I do comply but one thing I won't ever do is download the app.