"You may keep your physics at home; but would you really want to provide enemies with the opportunity to learn about who works at AWE, and where they live, or what their NI numbers are (for example)?"
I live between both AWE main sites. There's not miles of tiny country roadways to get there. Pretty much straight out of the main gates and you're on a main road. Should be extremely easy to identify where any number of staff live, especially given the long tailbacks caused by the army of cyclists leaving the sites every day. Hint: They aint riding to a home a long distance away..