They had the Imperial man on the telly - under pressure he admitted well it's just a model. The problems with models is finding things that actually fit what happens. In this case there isn't enough info about to do that accurately hence assuming that there are 6 to 10,000 around with it. The info on how many others get infected from one person having it is rather scant. One source came up with 30% of the people in a "room" but very few people. This is probably where the 2.4 others comes from - if that's what they are using.
The UK started as they should - test and track contacts. 2 problems. The tests take too long and it costs too much and spreads more quickly than they can cope with this way. Next step, reduce testing - well one is only test people who find themselves needing to go to hospital. Curious thing is other tests are available that pick up that the immune system has or is coping with the virus. It's suitable for self testing. Not as good as testing for the virus itself but way better than nothing. Some of these have been rolled out to certain sectors. Our lot appear from a single comment seem to see it as way of testing to see if people have had it. NHS England seems to be developing their own.
What did Singapore do having been here before with other new ones. They launched a web site for people to register that they were self isolating. We could add house number / name and postcode also NHI number and later say I am ok. All of a sudden a lot more info is available without testing and knowledge of who to test while they can cope.
5years in clink if people lie. Ok not perfect but again way better than nothing. As medical records would also be available these could even be tied in without need to phone 111. They would give some indication of the likely hood of people who will have problems. Just have to hope that going on previous performance the NHS don't do the software themselves. Cost of this - peanuts. Probably too late now.
China - initially hoped it would go away. Look what happened. Some parts of Europe are one way or the other doing the same. UK - currently pundits saying oh we can't do what China did as we are democracy. Bull stuff because if they find the need they can and will. Other countries are deciding that it's best to go in that direction immediately / rather quickly.
The economy - bluntly must keep the tax coming in for as long as possible. Also probably NICE style cost effective style thought that already cause people to die.
Corbyn's main problem - not explaining just how much tax people are paying without being aware of it - let alone profit that doesn't benefit many. Also years of propaganda of various sorts.