Ref: 574 1,000 acres of airfield, hangars, bunkers and other military buildings (Woodbridge, Suffolk) Hush House Hush house with tunnel
Ref: 1871 Magnificent late 18th century fort and tunnel system dug into a hillside (Portsmouth, Hampshire)
Ref: 2583 Unique industrial venue with outdoor and indoor spaces for film, events and photoshoot hire (Southwark, London) Entrance