If I was in charge of things, and I confess there's not a small amount of selfishness in this

, here is what I'd do.
Down here in Cornwall we've been very lucky with the virus, we've had the fewest fatalities, and the fewest confirmed CV-19 positive per capita, than anywhere else in the country. As of yesterday, we had only 20 people in hospital being treated for the virus across the whole county, and only 4 of these were in ICU. So it's fair to say we're ahead of the curve compared to the rest of the country.
I would start a pilot scheme here, effectively using Cornwall as a guinea pig, testing how things go here before rolling out to the rest of the country. This would be strictly for the locals only and there would have to be strict restrictions on people coming in and out.
So I would lift restrictions in a number of areas, but on the basis that strict social distancing rules, i.e 2 metres apart etc, were complied with in public areas. I would re open retail outlets currently considered non essential, like garden centres, clothes shops, furniture shops etc. Basically on the same basis as supermarkets are now with control on numbers and queuing as required. I would relax the rules on visiting people and would allow family visits and also friends subject to gatherings of maybe 6 maximum (not including children). I would re-open schools. I would allow pubs, restaurants and cafes to open provided they're large enough to manage social distancing. It would have to be table seated only, both inside and out, with strict table service so no queuing at bars. Strict hygiene rules would need to apply where hospitality is concerned. Things like hairdressers, beauty salons etc are more difficult because of social distancing, and if these were opened you would expect masks to be worn by the staff members. Full use of public parks and beaches would also be allowed, again provided social distancing was maintained and groups were kept to a maximum of 6 adults plus children.
I accept all of these things are high risk, but that is what you have to go through to find out if it works. Remember this is a pilot scheme to test the waters and the idea is to try and find out what works and what doesn't before you roll it out to the rest of the country.
The key to this working is testing and contract tracing. There needs to be adequate testing capability set up in the county, so as soon as anybody shows symptoms of CV-19 they are tested. They are also questioned about where they have been and who they have been with. If the test comes back positive, then all those people named are tested/questioned and so forth. Not only will the prompt testing enable us to reduce the spread of the virus, but after a while you will start to build a picture of what is happening and identify how and where the virus is being transmitted between people. So we can identify what is safe to role out to the rest of the country, and what isn't.
This would all take a while before any meaningful information is gathered, at least 3/4 weeks. So I'd start this immediately rather than wait for the end of the current lockdown.
There's probably stuff I've forgotten in there but you get the picture. Would it work?. It's worth a try IMO. Will it happen?. Not a chance in hell