I was wondering the same thing.
The lockdown in the UK is really odd.
You can actually go out all day and nobody would notice. You can go shopping, get a take away, cycle, run, walk, drive around etc
I'm staying home, but I can hear neighbours doing all sorts of things because there are lots of flats here.
The government was never clear and changed their message, so you can't just blame the people.
I think we should either have a proper lockdown, or just go for distancing like Sweden. This in between thing destroys the economy without benefiting us that much.
I would personally have gone for a full lockdown starting early March.