Were it were up to me, I'd take the following steps;
1) Focus the majority of resources upon protecting and isolating the elderly and sick. Make it fairly painless to self-isolate.
Instead of spending £330 billion-plus to bailout business and property owners, the UK Government could have simply sheltered those most vulnerable and reinforced the NHS. With an estimated 10 million people at risk, £10,000 per person could provide food deliveries, testing and PPE for care workers, the modification of living space, deep cleaning services, and technology such as webcams for social contact.
This would cost £100 billion. Another £100 billion could be spent to upgrade the NHS with ventilators and PPE equipment. This would cost less than half of the £435 billion spent to bail out the banks in 2008.
2) Impose travel restrictions and require a negative COVID19 test certificate for anyone entering.
3) Allow the virus to take its course amongst the remaining younger, healthier population. As the death rate for the young and healthy is about the same as flu, the NHS should be able to cope. With the exception of travel, businesses can go on as usual.
After two months, most of the population would have caught the virus, survived and become immune. The folks in isolation can then come out. By next winter there should some more progress for a cure.
What would you do?