Those stats are also available and should be presented with this slide.

https://ourworldindata.org/covid-vaccinations

Says about 80% are vaxxed in UK, so the unvaxxed are ~20% but only make up ~3% of the covid deaths...which means you're like 7 times more likely to die from covid if you got the shot.

And the lower numbers for the third shot are probably due to timing. Dose dependence of negative effects has already been demonstrated elsewhere, so expect the triple vaxxed to catch up and exceed the doubles.