Interestingly (& not to doubt your figures by the way) I read last week that as the deadline for people from the EU to complete their settlement scheme applications loomed, it was beginning to show that significantly more people from the EU were in the UK, than had previously been thought.
I find this incredible: that a country should not know with some degree of accuracy how many people live in it and from where they have come. I mean how can you plan your schools, your hospitals and other basic services if you don't know that?
I know the British are traditionally opposed to I.D. cards but maybe it is time for a re-think on that.... they could double up as vaccine passports too.