From my searching, this doesn't meet the current regulations of the socket is intended for EV use. The costs to make it compliant bring it up to the better options anyway.
And of course, you'd fit a socket like [1] which is waterproof even when in use, and has a built-in RCD if your consumer unit doesn't have one. It's common sense when using electricity outside. And your installer will want to make sure the circuit has enough capacity to avoid nuisance trips - put your EV on the same circuit as your kettle, washing machine, dish washer and tumble dryer and you'll have a frustrating time :)
But my point is, not every Brit with an EV spends £900 on EVSE - especially if they're only commuting two days a week, or they've got a plug-in hybrid.
[1] https://www.screwfix.com/p/masterplug-ip66-13a-1-gang-weathe...
No, not any more.