A further 15 deaths have been recorded in the UK’s hospitals relating to Covid-19.
This is a sharp rise from Monday’s death toll of four.
It comes as deaths in the UK have risen above average for the first time since mid-June.
However, coronavirus is not thought to be behind the rise.
The heatwave experienced during the week ending August 14 is likely to explain the weekly increase, the Office for National Statistics (ONS) said.
There were 9,392 deaths from all causes in England and Wales in the week ending August 14 – 447 more deaths compared with the previous week.
This took the number of deaths that week to 3.4% above the average for this time of year over the past five years – the first time the average has been exceeded since June 12.
Meanwhile, deaths involving coronavirus have been steadily falling.
There were 139 deaths registered in the week ending August 14 that mentioned “novel coronavirus”, an 8.6% fall from the 152 deaths in the previous week.
It is the lowest number of weekly deaths involving Covid-19 registered since the week ending March 20, before the lockdown.
Overall, there were 10,580 deaths from all causes registered across the UK in the week ending August 14 – 265 deaths higher than the five-year average and 370 more deaths than the previous week.
England had the highest number of deaths involving Covid-19 with 125 deaths, followed by Wales with 14 deaths, Northern Ireland with four deaths and Scotland with three deaths.