The UK's number of COVID-19 patients in hospital peaked at 19,500 in mid-April and fell to 800 by the start of September.
That's despite things like the 'eat out to help out' scheme that ran until the end of August.
Schools and colleges re-opened in September [1] and the government started "encouraging" workers back to offices [2] - and admittedly, by the end of September patients in hospital had only risen to 2,400.
But by mid-November we see the second wave peaking at 16,500 hospitalised. Today, as we come out of the second lockdown, there are still 15,000 patients in hospital.
The UK has not demonstrated that schools can safely be kept open.
Unfortunately, as the geniuses in government decided to reopen schools and universities and offices all at the same time, it's difficult to directly attribute the second wave to any single policy decision.
[1] https://www.gov.uk/government/news/schools-and-colleges-to-r... [2] https://www.bbc.co.uk/news/uk-53942542