https://mobile.twitter.com/AdamJKucharski/status/12388215155... is a UK modeller explaining that there has been a misreporting of UK's plan: UK aims to flatten the curve. Herd immunity "is a tragic consequence of having a virus that - based on current evidence - is unlikely to be fully controllable in long term in the UK."

It's a bit longer, but here's the Chief Medical Officer talking about the UK's response. https://youtu.be/IfJcwDaZrsA

UK is progressively adding lockdown too, per the response's plan.