Adding some more detail to the former Rocket Propulsion Establishment at Westcott, Buckinghamshire, UK. It's now Westcott Venture Park, but there is a secure inner compound within the secure site, where rocket engine testing is still carried out. I've had to remove a few roads that had been added to the map at Westcott because they didn't exist, and actually couldn't exist because they would have been on one of the old runway taxiways!
There are some paths on the map at Westcott that seem a bit odd too, since the site is a secure site, and if someone were walking along them, they'd have to go through 2 security fences to get in, and 2 security fences to get out to follow the paths shown. When I get some time at work, I'll have a look if there are any paths there, but I doubt it. One of the things about working on such a site though is people start to ask questions when they see you walking around with a bright yellow Garmin GPS60, so I have to be careful!