Talk of a national lockdown, or circuit breaker, call it what you will, is completely ridiculous.
According to the Gov.uk site we have a testing capacity of 350,000 tests per day. We have a map of clusters all over the UK, and there are some regions which have detected virus levels at 700 per 100,000 whilst other areas have less than 70 per 100,000.
I am not against lockdowns per se when the spike is in your face but we should use our resources carefully and be smart about this. Politicians even now are incredibly opportunistic. In fact most of Western government has failed. Look at the US political system. Look at the WHO. Completely inept. They should be trialing the vaccines instead of leaving it to national states like Russia and China that we do not understand/trust.