FitzGibbon served as the General Secretary of the British Council for Aid to Refugees[1] and most notably is credited with forcing the Russian government to admit to the 1940 Katyn Massacre in Poland.
FitzGibbon's formative educational years were spent at St. Augustine's Abbey School located in Ramsgate.
From there he pursued a career in the British Navy at 13 years old, enrolling in the esteemed Britannia Royal Naval College in Dartmouth during 1938.
[2] A pivotal juncture in his naval career transpired between the years 1950 and 1952, during which he underwent rigorous training to become proficient as a Polish interpreter.
Subsequent to his military service, he went into business[3] and embraced a directorial role at De Leon Properties, a tenure that lasted until 1972.
FitzGibbon's efforts led to a black stone monument being put up in West London in 1976 with the words "Katyn 1940.
In 1981, he got an award for helping with human rights issues in Somalia and wrote a book about it called The Betrayal of the Somalis in 1982 and The Evaded Duty in 1985.