@Ohdoleavemealone
I think it's good to have only Christmas day where people can meet, to stop all the inconsiderate and selfish individuals travelling 100s of miles and mixing with 100s of people.
However, saying there is a 5-day window, letting people make all their plans, book leave, pay for trains, book hotels etc, and then say 'nah fuck it ya cannae go!' FOURS DAY BEFORE, is quite cruel, and I wouldn't blame people for going ahead with their plans anyway.
Bit of a risk of getting caught though, and being turned back by police/authorities. And there IS a reasonable chance of that.
Interesting though, that two thirds of people (so far) agree with you. 
I am torn as I do agree with you that the restrictions are strict, but think it's horrible to have done it to people with such short notice. I have to say YANBU though, because of what @Ladylimpet said...
"Why anyone has made plans in the middle of a pandemic is beyond me. Anything can change, and does. All this talk of people being devastated? Really? Can't people just be thankful loved ones will be safe... rather than being selfish. I find it really odd people are willing to risk people's health, for the sake of a roast dinner. Bonkers. Devastation is seeing someone you love in a hospital bed. How bad does it have to get for people to realise?"
I suppose it was a bit crazy to have made plans, knowing how things have been changing so much, and so easily. Like the people who booked holidays abroad IMMEDIATELY when restrictions were lifted (in June?) There was no guarantee things wouldn't get bad again, (and they did!) It was foolhardy. That said, I do feel a bit sorry for some people, because, as I said, the short notice is very poor.
I have to admit though - and I know I sound like a bitch but don't care - I am quite amused by how incensed LONDON is at being put into tier 3, and then 4, so they can't do anything or go anywhere, and all non-essential shops are closed, and all the bars etc. I am amused, because they didn't give a SHIT when it happened up north and in the east midlands.
Many people have been tolerating these severe restrictions since MARCH, and the southern softies are pissing and moaning because it's now happening to them. They're like 'just how DARE you?' 'We are LONDON.' 'We are terribly important!' 'You cannot DO this to us.'
Yep they can, so suck it up chums! You are NOT that special!