I wish that I shared your optimism!
However, I rather suspect that there will be a much longer game played here.
Realistically, with the natives getting restless and lockdown fatigue, there will need to be some movement at the next 3-weekly review. It may well be a small movement.
One of the issues that the government has to handle is that we are not an authoritarian regime, and that they largely steer the country rather than drive it. Notwithstanding the media reports of people breaching lockdown, compliance has been FAR greater than they expected. That greater compliance is probably due to waiting for a few days longer at the start, so that when they announced it those whose lives were to be affected were begging to be locked down, rather than resenting it.
Not only has compliance been well over the target, but there has been a large degree of public pressure to go beyond the rules, and a woeful lack of understanding of what the rules are. This has resulted in many businesses that were allowed to stay open closing because the PR impact of staying open was a bigger threat.
So, I would expect that 11th May could see the re-opening of non-essential shops, but NOT those establishments listed in Parts 1 and 2 of the regulations (Leisure, Recreation, Grooming and Hospitality), subject to social distancing.
Schools will, I expect, return after half term (beginning of June), but probably only part time to stagger classes and allow distancing.
Hair Salons and Barbers are probably going to return at the same time. This is a difficult one, because it is really hard to control the infection risk, but equally we cannot go forever without hair cuts.
Other Leisure, may return in July, and at that time, use of the canals might be opened up again.
Hospitality is probably going to be August/September with restrictions, and possibly not fully open until Christmas.