Before revision:  The ONS\pm  's respective counts of 531,3432, and 6139 COVID-19-associated deaths are appreciably lower, implying that the ONS's counts underestimate rather than overestimate the true death toll.
After revision:  The ONS\pm 589 from 11-17 April). Both the Office for National Statistics 's respective counts of 531,3432, and 6139 COVID-19-associated deaths are appreciably lower, implying that the ONS's counts underestimate rather than overestimate the true death toll.