[6] He had previously served as the president of FBCCI, the body that regulates businessmen in Bangladesh, in 1979 and DCCI in 1976–1978.
He is the grandson of Khan Bahadur Chowdhury Kazemuddin Ahmed Siddiky, the co-founder of the Assam-Bengal Muslim League during the British rule and one of the founders of the University of Dhaka.
[7][8][9] Siddiky is the founder treasurer of the BNP and was a member of the National Standing Committee since its inception.
[4] During the term of Hussain Muhammad Ershad, Siddiky was convicted of corruption by the martial law court and served 3 years of a 14-year sentence before being released during the Anti-Ershad Movement.
[10] Siddiky had been present at a press conference where his son made allegations against the BNP Chairperson Khaleda Zia and other politicians.