The OP says he's turned it off in the past and made a special key to fit so it's a bit presumptuous IMO to suggest he doesn't know what he's talking about by saying that's not where his stopcock was located. It's pretty clear from the photograph that the access point shown
IS located in the road, the cover is clearly marked as such is it not and it's just as stupid to put a test point in the road as a shut off valve. There is also clear evidence that it has been excavated at some point in the past as the tarmac around it is different which would not be the case otherwise.
Ours is in the pavement very close to the road but don't presume the water boards or builders of the time have commonsense as I've seen a number of access points in rather stupid locations when I had my building company. Our houses are only around 50 years old and our water company doesn't even have an accurate map of the drainage systems, I know this because they were employing students to knock on doors to ask if they knew which manholes were surface and which were foul systems, I spent an hour with two of them explaining while they drew the points on a map. BT are the same, instead of trunking for the telephone wires they were just buried so although full fibre is now only 50 yards from us I can't get it without them shoving a mole through instead of just pulling cables.
As far as water meters are concerned, unless a big family in a low band rated property or you're constantly watering the garden or have a car wash business on the side
you would usually save, our bills were halved and we've had one for years now