//NJ - they don't need to actually stop them entering Wales, all they have to do is to stop every car thus causing delays. Word will soon get round.//
How many entry points are there on the 160 mile long Anglo-Welsh border? Are you seriously suggesting that places like the Severn Crossing will see every car stopped (including those people who live in Wales and who are returning from England)?
//My partner lives in West Cheshire, currently in the high tier.
I can’t leave, however she is free to pop over to me see me or go shopping at nearby supermarkets whenever she wishes? W T A F?//
So the Westminster government (in this case acting solely to legislate for England) has to impose restrictions on English residents so as to complement Welsh regulations? I don't think so. Welcome to the lunacy that is devolved government. That idea is quite alright when it comes to emptying the bins but falls down a bit when it comes to imposing travel restrictions across a single sovereign nation.