I think the Vallance and Fergusson are behind the herd immunity strategy and we have a neo-liberal government all to eager to take it, until they realised that the fall out would be too great.
Basically it could effect everyone, not just the poor and disadvantaged, who they don't care about.
The government have done some good things, the offer to underwrite 80% of everyone's income and also the new Nightingale hospitals is good work, but there are some horrendous errors, which all stem from their initial denial and head in the sand strategy.
When we have medics dropping dead left right and centre, due to lack of PPE, think will come back to hit the government hard. And it will happen.
And if you want some insight into how these type of people think, this is a good article by Toby Young.