I do wonder if this decision doesn't have a Brexit component, the transition period will be over the end of this year, so I guess that is when the real bad stuff from Brexit will start becoming clear, if you mess up your economy the year before by lockdowns then what happens when things go really downhill?

If you don't lockdown, and other countries do, can you somehow benefit? I would say no that doesn't make sense but I somehow have the feeling that the people who currently lead the UK do not share my understanding of what is reasonable in any way whatsoever so maybe they would have a Baldrick level cunning plan in mind?