Trying to dig old photos of North Staffs routes out of the internet, I find examples of an exact match with the bargeboards, including the finial (as well as not-quite matches), the chimney stacks (as well as numerous similar styles), the telegraph poles (size and positioning of crossbars, pair of steps apparently too close below the crossbars to be of any use) and the signal (style, height, cap on pole). Just no photos with all four of these elements in the same picture.
What I haven't found is any picture of a North Staffs crossing with gates that have pairs of diagonal cross-braces at opposite inclinations. They all seem to just have a single diagonal brace per panel. Still, it's always possible that something went through the original gates and they were replaced with a later standard pattern.
I read the car registration as KJW745, which is Wolverhampton, so not all that far away.
I agree that there is probably a road joining from the left immediately after the crossing. The crossing widens significantly towards that corner - the far wicket gate is way out of line - and there is road surface visible between the bars of the gates where it would otherwise be verge.
I don't think the black splodge is real, unless it is a gigantic horse with one eye, no ears and an attempt at doing its mane in a Mohican.
I don't think the "flat surroundings" are indicative of it necessarily being in one of the parts of England that were only dubiously land until a few centuries ago. I doubt the furthest bit of background visible in that photo is even half a mile away; it just hazes out. There are small flat bits all over the place, they do tend to attract level crossings, and even good-quality un-hazy photos of level crossings so sited do tend to make it look as if the thing is in the middle of a vast and endless plain when it actually isn't. It's also an unusually level level crossing, with next to no elevation of the road to cross the tracks, which suggests that the underlying ground conditions are unusually firm rather than soggy.