The daily reported deaths, i.e. cases that had tested positive, used to always be lower than those reported by the ONS, i.e. cases when Covid is mentioned on the death certificate, yet that hadn't been the case in more recent weeks, so there was clearly something wrong with the daily figures.
The ONS data involves a lag, their latest figures are from week ending 31 July 2020 (Week 31), and report 193 Covid deaths, an average 27.5 per day, whereas the average of the daily figures for that week was around 55, basically double the ONS figure. Although the ONS' own data only covers England & Wales, they add in the figures released by Scotland & NI, see bolded bit below.
I'll just re-cap those as figures for the week - ONS (England & Wales) 193 + 7 for Scotland + 1 for NI = 201. The daily reported figures for the week had been around 385, which would appear well out.
The adjusted daily average for that week is now 15, 12.5 lower than the ONS figure, but likely to be adjusted upwards once checks are done on those dying up to 60 days after a positive test, which are no longer automatically included, but where the cause is indeed Covid, bringing it even more inline with the ONS data.
The daily figures have always been a rough & ready guide, I personally believe the ONS data is the important one.
- The number of deaths registered in England and Wales in the week ending 31 July 2020 (Week 31) was 8,946; this was 55 more deaths than in Week 30.
- In Week 31, the number of deaths registered was 1.0% below the five-year average (90 deaths fewer); this is the seventh consecutive week that deaths have been below the five-year average.
- Of the deaths registered in Week 31, 193 mentioned "novel coronavirus (COVID-19)", the lowest number of deaths involving COVID-19 in the last 19 weeks and a 11.1% decrease compared with Week 30 (217 deaths), accounting for 2.2% of all deaths in England and Wales.
- The number of deaths registered in the UK in the week ending 31 July 2020 (Week 31) was 10,242, which was 42 deaths fewer than the five-year average; of the deaths registered in the UK in Week 31, 201 deaths involved COVID-19.
Provisional counts of the number of deaths registered in England and Wales, including deaths involving the coronavirus pandemic, by age, sex and region.
www.ons.gov.uk