Except he hasn't relaxed anything other than the 'house arrest' element of lockdown. Social distancing still applies.
So, before anything else changes we get to go outside a bit more. Employers get a bit more time to check their work arrangements and PHE etc watch the numbers.
If there is no spike in 2-3 weeks then we move on a bit, or back a bit if there is.
That's it! It is a reactive plan, one that continues to have infection rates front and foremost. Other countries are trying to be proactive, and given the situation I'm not sure that is possible!
What we actually have is a government who are not giving us dates but are giving us an explanation. We have already been told what will happen if R increases. What happens in countries where a specific date has been given?
Stay at home, consider any changes, talk to your boss. Do what you can do safely. Wait for the next step...
And yes, the onus is on us. It has to be. We have to be part of the solution as it is our lives, livelihoods etc. The virus isn't going anywhere. We have to learn how we can live with it.