I do wonder if the imminent relaxation of lockdown in England is in effect an admission by the government that they have lost control.
Clearly some people have not been following lockdown rules, right from the start, and breaches seem to have become more frequent. The Cummings affair is likely to have exacerbated this.
At this point, one option might have been to double down on the restrictions, or at least prolong them, but as there aren't enough resources to enforce them (and possibly little political will to do so) this would probably result in even more widespread disobedience, and the government being even less respected. So instead, it occurs to me that the plan might be to give the public what they appear to want, in the expectation that when a second wave hits they'll be pleading for lockdown again.
(Or it might just be that they can't afford to have the economy shut down any longer.)