Note that only 9798 deaths have been registered occurring W21 to W21+8. This is at +8 days.
This contrasts with the final count of 12,288 deaths registered DURING W21. These 12,288 deaths will have occurred up to a year before, but mostly in W20.
W21 death occurrences should end up just below 11,000. This is far, far short of normal winter levels, but people are still terrified of covid-19, so a big deal will be made of it. We expect around 9500 deaths at this time of year.