This surely can't be right.
It gets confusing between the nations, but England alone hospital deaths peak by date of death was 756, on 12th January.
The peak in admissions was actually on the same day, 4134
756/4134 = 18%
Even with lags etc, there's no way it's 8% I think?
Have I made some obvious error here? Where's your number from?
Daily deaths data by date of death (England)
Health and high quality care for all, <br />now and for future generations
www.england.nhs.uk
Admissions data
GOV.UK Coronavirus dashboard
coronavirus.data.gov.uk