Hospital admissions are the key measure and even then, the government are not being clear about how they are measuring this - a "covid death" is a death from any cause within 28 days of a positive test which is not the same as a death caused by Covid.
Further to RaspberryCoulis’s comment above, I will copy and paste what I wrote elsewhere:
“ There still seems confusion by some on how Covid 19 is recorded on death certificates.
Death certificates have two parts, part 1 the underlying cause of death, part 2 any conditions that may have contributed to the death. The conditions mentioned in part two must be known or suspected to have contributed to the death, not merely be other conditions which were present at the time.
Part 1 lists the underlying cause where you are asked to start with the immediate, direct cause of death on the first line of part 1 then quoting from link below: ‘to go back through the sequence of events or conditions that led to death on subsequent lines, until you reach the one that started the fatal sequence. If the certificate has been completed properly, the condition on the lowest completed line of part I will have caused all of the conditions on the lines above it. This initiating condition, on the lowest line of part I will usually be selected as the underlying cause of death, following the ICD coding rules.” Full details here: assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/877302/guidance-for-doctors-completing-medical-certificates-of-cause-of-death-covid-19.pdf
ONS last mortality monthly update shared as of November 2020 58,977 deaths had coronavirus listed as the underlying cause of death. ONS have also calculated elsewhere so far approx a further 10% of deaths listed coronavirus as a contributing factor in the death.
Details here: www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/bulletins/monthlymortalityanalysisenglandandwales/november2020#deaths-due-to-covid-19-registered-in-november-2020
So as of today in UK 79,351 deaths have been registered with COVID as involved in the death. About 90% of these will be with COVID as the underlying cause, not just a contributing factor. So approx 10% of these COVID deaths (roughly 8,000) will have COVID mentioned as a contributing factor but not the underlying cause of death.”