Re: In the UK
I believe there is a review into making them legal on roads in some places/circumstances.
Given Shapps (Transport Secretary) was waxing lyrical about out of town bus parks with people riding eScooters into town as if they were already legalised at a recent Coronavirus Briefing it seems clear the government will be legalising them.
"RIP. Dodged Covid-19. Not quick enough to dodge the eScooter"