Eng was chairman of the Italy Department of the Svenska Rominstitutets vänners ("Friends of the Swedish Institute in Rome") and of the Special Committee on Management Staff/Relations of the Food and Agriculture Organization (FAO). He was vice chairman of the FAO Appeals Committee, honorary member of the Swedish Chamber of Commerce in The Hague and the Swedish School Association in Rome. Eng wrote a number of journal articles in legal subjects and papers in economic press, Il Mezzogiorno (account of developments in southern Italy) and a large number of anthologies in Italian relating to Swedish-Italian relations and contacts.[1]