I can never understand why this government gives at least 2 weeks notice they are going to 'introduce' something.
E.G. Anyone not back in the country by a certain date, (I've forgotten what the date was), will have to self isolate for 14 days. I know one of the caretakers my wife gives work to suddenly rushed back a week later so he wouldn't have to self isolate. My own 80 year old FIL said last night he will go shopping on Wednesday and stock up so he doesn't need to wear a mask in shops on Thursday, and he is not the only one to hold this view! My wife popped into town this morning and she said it was heaving compared to a normal Monday morning, and very few were wearing masks, gloves etc.
When they decide to do something it should be implemented within 24-48 hours Leaving it longer is just raising the risk of someone bringing it in at a later date.