@GoldenOmber
I think that the government is watching others, as well as trying to work through the modelling. Frankly, it is a huge exercise to cost all the trade offs financially and in terms of the risk of further spread.
Honestly, people want to hear that there is an exit strategy when really that is the wrong term.
Lockdown is not financially sustainable for the long term, so we need to bridge the gap between a vaccine (which may never come) with social distancing that can assist in sustaining our economy without causing "too much" infection and death.
The reality is that this is a vast moral choice requiring masses of trade offs - when they open schools, the unions will be very agitated about this as it will obviously increase risk to teachers as compared to sitting in their houses teaching online, or only coming in infrequently as part of a rota (not saying this is true in all schools, just an example) but then there is the financial cost to not opening schools for working parents and the intangible cost to pupils' futures, skills and then the human cost of the most vulnerable children, of mental health of children from being stuck indoors etc to weigh against that. The unions keep referring to only opening "based on science", but the science is pretty obvious - even if opening the schools creates negligee risk, it will still create SOME risk, and some people won't be happy about that, even when told that, in the government's view, it helps to avoid some other worse ills, some of which could be quantified in terms of money or death and many won't.
Science can help in terms of trying to understand the impact, but the trade offs are not just about science. I don't think that some of the British public are mature enough to accept this sadly (you only have to look at some of the schools threads on Mumsnet, everyone is out for themselves, everyone is an armchair expert and some people honestly seem to think that the state will just pay them to sit at home indefinitely until a vaccine arrives so they can avoid any level of risk at all) - and I definitely don't think the media are.
So the best thing for the government to do politically is to implement the most successful of the strategies put in place by other countries. So then it can say "see - it's not an immoral tory thing, it is what the Germans and Austrians are doing very successfully.