World War II spies for the United Kingdom

Maurice Southgate (20 June 1913 – 17 March 1990), code named Hector, was an officer in the Royal Air Force and an agent of the United Kingdom's clandestine Special Operations Executive (SOE) organization during World War II. The purpose of SOE was to conduct espionage, sabotage, and reconnaissance in occupied Europe against the Axis powers, especially Nazi Germany. SOE agents allied themselves with resistance groups and supplied them with weapons and equipment parachuted in from England.
Southgate was the organiser (leader) of the SOE's STATIONER network (or circuit) operating in a large area centered on Châteauroux in central France and Tarbes in southern France from 1942 to 1944. He was captured by the SS in Montluçon in 1944 and deported to Buchenwald concentration camp where he survived until its liberation by American forces in 1945. Southgate was regarded by Maurice Buckmaster, head of SOE's French Section, as one of his best agents.

George Langelaan (19 January 1908 – 9 February 1972) was a French-British writer and journalist born in Paris, France.
He is best known for his 1957 short story "The Fly", which was the basis for the 1958 and 1986 sci-fi/horror films and a 2008 opera of the same name.

Juan Alberto March Ordinas (4 October 1880 – 10 March 1962) was a Spanish business magnate, arms and tobacco smuggler, banker and philanthropist.
Closely associated with the Nationalist side during and after the Spanish Civil War, March was the wealthiest man in Spain and the sixth richest in the world. Throughout his life, he accumulated labels such as "the Rockefeller of Spain" or "the last pirate of the Mediterranean". At his death in 1961, Time called him "the Iberian Croesus".Born into a humble family of peasants in Mallorca, he was expelled from school at an early age and began helping his father with his pig farming business while smuggling tobacco from Spanish Morocco. During the Mediterranean Theatre of World War I, March was involved in an international affair after he gave supplies to a fleet of submarines of the Austria-Hungary in his island of Cabrera. This action cost him the expropriation of the island by the Government of Spain acting on behalf of Winston Churchill, at the time First Lord of the Admiralty. In 1916, he founded Trasmediterránea, an important shipping company that strengthened March's naval outreach. He gained political protection from Primo de Rivera and established Banca March to finance part of his business ventures, including Franco's coup d'état and most of the Nationalist effort. For a short period of the Second Spanish Republic, he was jailed due to financial irregularities and illegal activities, including tobacco and arms trafficking. He managed to escape prison by bribing a Civil Guard and fleeing to Gibraltar.In 1955, he set up his eponymous foundation of philanthropy and sciences, similar to the Rockefeller or Carnegie foundations. Around the same time, an elderly March uttered his famous "I am so rich, that I do not even know how rich I am". He died in March 1961 from sustained injuries caused by a road accident in Madrid.
The March family under his patriarchy had a strong influence in the financial, social and cultural aspects of European affairs in the 20th century, and it played an almost equally important role as the Rothschild family. Today, the Marches are among the richest in Spain, reported to be worth over US$5 billion.