This all seems to have got a bit personal and blown up out of proportion. As fars as I see it, if you want to go for a long bike ride in UK, there is nothing to stop you. If you feel that the risk is too high for your personal circumstances, that's fine and is your decision - though you shouldn't try to impose that judgement on others so long as the laws and guidelines permit what they're doing.
Audax UK may have been slower than some would like in reopening their processes, but their guidance is evolving and it's fair to assume that it will eventually return to pre-Covid conditions, though possibly with some additional precautionary measures. For those in England, there has pretty much been no legal limit on how far or how long you can ride a bike throughout this mess, though there were temporary limits on overnight accommodation and practical limits on being able to source supplies while out.
I'm not a big-ride fan, though I am a member of AUK. I've had some wry moments of amusement watching the passions displayed in this thread, but I think that the contortions people are going through to justify their positions are obscuring the basic point which is that you can ride if you want to (you always could, in England), and you now have a reasonable assumption that most Audax-stylee stuff will be returning fairly soon. Chill.