Complex sentence: Geoffrey Arthur Prime (born 21 February 1938) is a British former spy for the Soviet Union while working for the Royal Air Force and later for Government Communications Headquarters (GCHQ), the British cryptography agency, during the 1960s and 1970s.
Split into simpler sentences: Geoffrey Arthur Prime (born 21 February 1938) is a British former spy. He disclosed information to the Soviet Union while working for the Royal Air Force and later for Government Communications Headquarters (GCHQ), the British cryptography agency, during the 1960s and 1970s.