I think it's perfectly reasonable to assume that the significant excess
non-COVID deaths (about 15,000) since the second wave bottomed out (@80pw) end April are down to a combination of factors. (Note that
COVID deaths since 1 May are
about 14,900.) One must be people's perfectly reasonable continued reluctance to go near a hospital with the ever-present risk of nosocomial infection. I'll bet another reason to stay away is the ?British too-unselfish 'other people need hospital treatment more'. No doubt people have stayed away from primary care for the same reasons and also far less face-to-face interaction so incipient disease has not been picked up as early as pre-pandemic it might. Sure there are excellent papers etc on this and many more likely causes.
All figures are England and Wales.
Here's the Nightingale graph produced by CEBM. I note that the excess death rate (which I'm defining as all deaths per week above the 2015-2019 average) is well above the number of deaths per week due to COVID-19 (deaths registered mentioning COVID-19 on the death certificate).
"The number of deaths registered in week 45 was 12,050 deaths (week ending 12 Nov); 16.6% above the five-year average (1,719 more [excess] deaths)." According to the gov.uk dashboard the 'COVID' deaths in the week to 12 Nov were about 939 (1198 for UK).