Witzend
How do you prove you’ve taken a test? A pic of the result on your phone I suppose - easy enough for the majority.
I started a stinking cold recently, a lot of sneezing and runny nose, so having read that these may be symptoms in the double jabbed, I did a test at home. Came up clearly negative within a very few minutes, so ?it was correct.
Problem with making LFT tests mandatory is that you can cheat on them. Without even doing a test. You don't even have to show a photo of the test result. That would be obvious to anyone who has done the test, in Scotland at least. Maybe different in the rest of the UK?
And if you are an avowed anti-vaxxer who needs an LFT test to get into an event, you're hardly going to do something that the Government tells you to, are you?
BTW - it takes 30 minutes for the test to be valid, I hope you checked it again after the stipulated 30 minutes.