It's not clear and it WILL cost lives.
You do realise there is no cure for this virus? Yes it WILL cost lives, it has always been known it will cost a lot of lives and, unfortunately, it isn't over yet.
The whole point of the lockdowns is to stop health services being overwhelmed all at once. A slow trickle instead of a quick flood. So that more people can receive medical attention and more people be helped to survive it. As Boris said, without lockdown, half a million people might have died. With lockdown, so far, 30,000 have died.
There will be rolling lockdowns. Strict lockdown, people die but health services cope, then a lifting of some restrictions, more people die but health services cope, then strict lockdown again and repeat and so on. There is no end in sight yet. Just strict lockdown and light lockdown, alternated for many months
This strategy is led by science. It is the same strategy all governments, more or less, are using. It isn't about politics, it's about science. The best science can do without a cure. Its brutal but it's all we have. Not sure why people don't understand this?