[3] He was a member of the Egyptian delegation led by the Prime Minister Mustafa El Nahas which signed the Anglo-Egyptian Treaty in August 1936.
[8] He was the primary liaison between the Prime Ministers Mustafa El Nahas and then Mohammed Mahmoud Pasha and the British Embassy in Cairo.
[6] The assassination was planned by the Egyptian army officers, including Anwar Sadat who would be the president of the country, and their target was also Prime Minister Mustafa El Nahas.
[7][18] When the assassins led by Hussein Tawfiq did not manage to kill Mustafa El Nahas on 26 December 1945, they targeted and murdered Amin Osman.
[2][19] Years later Anwar Sadat told these incidents in detail and argued that they murdered Osman due to the fact that the program of his party, the Revival League, emphasized the significance of the relationship between Egypt and Great Britain.
[3] During his funeral the supporters of the Wafdist Party and university students protested the government demanding the resignation of the Prime Minister Mahmoud Fahmi Nokrashy.