-
That comes from the UK government covid data site which says there's been a 10% drop in the last 7 days. https://coronavirus.data.gov.uk/details/testing
So there has been a drop, but, arguably, it's to be expected for, at least, two reasons: 1) schools are out; 2) if cases are indeed going down people are less likely to get tested.
Edit - to add, the share of positives per test is dropping despite the a drop in testing numbers on the whole. So I wouldn't want to make the claim that the drop is simply a result of fewer tests.
Drop in number of tests, increase in time for tests to come back. But that is the cynical view.
I think vaccinating the young has the biggest effect on transmission as they are the most mobile and mixing the most. So hopefully this, plus schools and footbal as you say are the reasons