Britain’s biggest airforce base is about to expand by more than a third to accommodate thousands of extra military staff coming to work in Oxfordshire.RAF Brize Norton, near Carteron, is taking over the duties from RAF Lyneham in Wiltshire, which is closing.BBC Oxford spoke to historian Dr Simon Townley to take a look back at the airbase's history by speaking to historian Dr Simon Townley as well as getting the views of some of the people who live there.