I wonder whether it will be a continued case of ripple and subside based on specific factors?
So 15-19s go up - festivals. 40-44, maybe 45-55 go up as a result since those are the typical parental ages for that group.
Then these groups subside, possibly to go up again in a couple of weeks as a result of university freshers' weeks etc, but without the onward transmission to the parental age group.
Then 10-14s go up - schools - followed by their parental groups - 30-40s. Then possibly subside.
5-9s are interesting, because they are also at school, and not vaccinated at all, but IME as a primary school teacher are very very rarely tested (too inconvenient for parents, atypical symptoms and not suggested as part of regular school lft testing). Quite possible that their effect will mainly be picked up through a rise in their parental groups - 25 upwards.