You're blaming the qualitative difference in the observations on sample size when Denmark, Norway and Germany all observe the same effect to differing degrees -

You're blaming the qualitative difference in the observations on sample size when Denmark, Norway and Germany all observe the same effect to differing degrees - namely, rare blood clots approximately an order of magnitude more frequent than data from Europe as a whole indicates. You should at least acknowledge that the UK has a per-capita Covid lethality of 15 times that of Norway, and that this might also be a relevant factor in these decisions.