Discover the stories of the brave men and women who worked, trained and fought across the UK in an unbelievable effort to defeat the Nazis during the Second World War.From the outset of the war, most of Britain felt like a mystery even to those who lived there. All road and railway signs were removed up and down the country to thwart potential enemy spies. An invisible web of cunning spread across the United Kingdom, secret laboratories were hidden in marshes, underground bases were built to conceal key strategic plans and grand country houses became secret and silent locations for eccentric boffins to do their confidential cryptography work.In Secret Britain, Sinclair McKay maps out the UK through the hidden bases and battlegrounds that were mostly kept under the Official Secrets Act until 1975. From secret wildernesses where rockets were launched into the skies to the underground tube stations commandeered for control rooms to factories hidden deep beneath the ground, there is still so much to uncover and explore.These locations are full of history and intrigue, but if you don't know where to look, you might just miss them.