Through the Blitz and beyond, the part the Underground played in World War Two was a complex one. Nowhere was this more true than the role it played in sheltering the civilian populace from aerial attack. The part platforms at places like Aldwych played, and the tragedy at Bethnal Green are now relatively well known. What is perhaps less well known, however, is the role played by the Deep Level Shelters - the remains of which can still be seen at street level.