Regarding Wolverhampton cross-border test stations, in April 2021 StuartW wrote:
Can't be bothered counting them all, but must be thick end of 100 in total, maybe 80-90 or thereabouts
Counted them all last night, and I make it 169 now
(Didn't actually count them individually - click on the wee icon to the left just above the map, and you get a list of all the stations, but you just have to add five figures together to get the total, effectively.)
And looks like there's almost thirty in the Greater Manc area alone
https://www.wolverhampton.gov.uk/licenc ... ng-station