With most places, there is an easy way in and a difficult way in. After half an hour walking round trying to find a diffcult way in (how to scale a 15 foot high concrete wall that's on an embankment?), I stumbled across the easy way in, which was about 30 feet away from the walk in access, and only 50 feet away from where I'd started in the first place.
Anyway, the explore. I don't know much history about this place, other than it was built in the late 70's at great expense for testing prototypes from the nearby Leyland Trucks empire. It was last used by Pilgrim, a Leyland Trucks subsidiary. Like the rest of the Leyland sites, the future for this place is yet another huge housing development.
Not a bad mooch as it's a huge place, although frankly most of it is either grass or road, and that starts to get boring quickly.
This was a fork in the road, not sure if the track could be used in two different directions?
Bumps-a-daisy
You can see here the two man made hills for testing grip, hill starts and other fun stuff.
Some sort of tall garage unit with inspection pit. Notice the height - this was of course a truck testing track.
No idea when the track was last used but given the quality of the road surface, quite some time ago I'd suspect.
Not entirely sure what this once was, or even if it was something off a truck, but it was too good to miss.