“Between Weeks 1 and 12, 138,916 deaths were registered, which was 4,822 fewer than the five-year average for these weeks. However, between Weeks 13 and 36, 285,919 deaths were registered, which was 56,721 more than the five-year average.
Week 36 was the first time in four weeks when deaths were lower than the five-year average (1,443 fewer deaths).
The week ending 4 September (Week 36) contained the late August bank holiday, which would have contributed to the decreased number of deaths registered and the decrease in deaths registered involving COVID-19.”
Also cut and paste from the ONS webpage that you used. If you’re going to use statistics, you really should include the whole picture, and not just quote selectively in order to mislead people and support your own conspiracy theories.