[2][3] Salimullah began his career in government service in 1893 as Deputy Magistrate, a position he held until he departed in 1895 to start his business in Mymensingh.

On 14 and 15 April 1906, Salimullah organized and was named president at the first convention of East Bengal and Assam Provincial Educational Conference at Shahbag, Dhaka.

Over two thousand people covering Muslim leaders from all over India gathered at the Nawab's family garden-house in Shahbag, Dhaka for the conference held between 27 and 30 December 1906.

On the last day, the assembly formed the All India Muslim League, appointing Nawab Salimullah the Vice President and placing him on a committee to craft its constitution.

Throughout these years, Salimullah held positions of authority in several leagues and conferences and continued to speak out on important political issues.

Within days of the annulment, Salimullah submitted a list of demands to Viceroy Lord Hardinge to protect the interest of Muslims.

Salimullah continued afterwards to champion this cause, making speeches to counter those who argued against it and, in 1914, organizing a convention on 11–12 April for the Muslim Education Conference of United Bengal.

Khawaja Tofeal Ahmed was a member of Awami league and was elected as Dhaka's MP in 1971 but unfortunately he was shot in front of his greenhouse on 18th Feb 1972.

They include most notably the following: In 1990 the Pakistani government launched commemorative postage stamps honouring Sir Salimullah as one of the Pioneers of Freedom.