So, based on your data: Country | total deaths | population (mm) | % death France: | 125,269 | 67.06 | 0.186% UK: | 157,194 | 66.83 | 0.235%
I don't care so much about the % higher when we are dealing with these kinds of numbers. Is the same as 'eating red meat increases your changes of colon cancer by 10%!!!!` and then you see it increased it from 0.01% to 0.011% (or something like that).
For me, you can find a million explanations for that small difference in the numbers, and I doubt it can be attributed to UK's government handling of the situation.
[1] https://www.statista.com/statistics/1111779/coronavirus-deat...