Actually I think spreading the pandemic in the UK isn't the worst idea...
I know your opinion because you have repeated it several times over the last month, but given what is currently happening in Italy and Spain, what you and your government are thinking is completely crazy. While most of the world is fighting to control the infection, you would infect the entire UK population and get a score of 5-10% of those infected dead. UK's population is close to 68 millions, so you still think 3.4 million (5%) deaths sounds good?
We have slightly more beds than Italy but we don't yet have more ventilators.
According to the information I found, UK is have around 4000 beds for patients with respiratory problems, Italy has about 5000 of them, and Germany is have 25 000 such beds. Given your state of mind and completely illogical thinking about how to approach this problem, I do not see how the UK can avoid what is currently happening in most European countries that have taken extreme measures not seen since World War II.
The US and UK both have weaknesses in their healthcare systems which could trigger a collapse if the two countries experience the kind of severe coronavirus outbreak similar to Italy, a Financial Times analysis has found.
Both countries have fewer hospital beds per capita than most other western nations, the analysis shows. While the US and UK have about 2 beds per 1,000 people, Germany, by comparison has 6, while Japan has 7.8, according to the OECD.