Homesick wife 'almost blew cover of double agent'

Britain's most important double agent of the Second World War almost had his cover blown because his homesick wife could not stand living in England, according to secret files made public for the first time.

Juan Pujol Garcia - codenamed Agent Garbo by MI5 - was a Spanish national living in the London suburb of Harrow from where ran a network of fictitious sub-agents sending back a steady stream of false intelligence reports to his German spymasters.