The UK Office of National Statistics put the data out with the funky 10-59 age range group. I find it strange considering they broke out the 60-69, 70-79 and 80+ as different groups. It makes for a convenient reason for the disparity between the vaccination groups but it is strange and can also be hiding other issues.
Perhaps lumping 10-59 means there’s one bad graph compared to three good graphs for the older ages. If they did 5 graphs, they might have 5 bad graphs. Or maybe one of them has a multiple of 3 or more.