I got Covid travel insurance at £20 to cover any unexpected overstays.
Hence if you're able to cheat the test abroad, you can then decide if you're sick enough to get further tested when back home or just get on with life after a couple of days off. Day 2 tests are hardly chased up anymore and you can just say it was lost in the post if NHS do call you (Drop off box, no tracking). Had an interesting conversation at golf this morning with someone who is in property and always out and about with work, says he can't even afford to isolate, let alone get stuck in a country abroad. I imagine there are many people like him who would look at cheating the system due to the huge inconvenience of it all and potentially having almost a whole month off work.
They should just make testing compulsory at the airport. Only way to fully know and make flights safe for everyone. You can have a negative test 3 days before flight home and then be positive in the next couple of days and you wouldn't know if symptoms haven't kicked in that much yet.
I was in Morocco for their rising cases and now they are about to go on the red list when their cases are finally coming down. Meanwhile here in the UK we've opened up sports venues,seeing COVID cases climb again and we have the audacity to pick and choose what countries to ban based on their cases. Makes zero sense to me.