I agree @SquishySquirmy we went from saying huge gatherings were fine (Cheltenham/ football matches/ concerts). To full lockdown within a week. The deaths we are seeing now are from around that time.
I don’t think schools should have shut any earlier or lockdown should have happened any earlier.
I do think we should have tested more, we should have quarantined those coming in from hotspots much earlier rather than the wishy washy ‘isolate if you have symptoms’ we know people are infectious before symptoms and that a huge number are asymptomatic so quarantine for 2 weeks should have been mandatory.
This would have been more effective at slowing the spread and may have actually meant we could have not had a long lockdown? The countries who are on top of this will come out of lockdown sooner with less of an impact on their economies.
I like that Chris Whitty said we had a lot to learn from the Germans. However, we were advised by the WHO to test, test, test. We chose to ignore this advice.