British Security Co-ordination was a group of people who worked during World War II to keep Britain safe from enemies. They were like superheroes who worked behind the scenes to gather information and make plans to keep Britain safe. They had secret codes and special ways of talking to each other to keep everything secret.
Their job was really important because during the war, Britain was at risk of being attacked by other countries. The British Security Co-ordination helped to stop these attacks by spying on the enemy and figuring out their plans. They also helped to protect important people and buildings by keeping them safe and making sure the bad guys couldn't get in.
In simple terms, the British Security Co-ordination were like the secret agents who worked really hard in the shadows to keep Britain safe from harm during the war.