A couple of weeks ago, while trying to find out when and why the low white buildings near the Earley Gate entrance to Reading University were built, I came across this page at Subterranea Britannica which describes a nuclear bunker in Reading University grounds. This bunker was built in the 1950s as a seat of government for central southern England in case of nuclear war. It was decomissioned in the 1960's and is now used by the University Library for storage space. I wandered up there this afternoon and took the above photo. You can find the bunker here on Google Maps.
Incidentally, the low white buildings were apparently built during the war to house a department of government, presumably evacuated from London to avoid the bombing.