Said Amir Shah was a London-based silk merchant and warehouseman. He ran a business with his brother Fazal Shah on White Church Lane, and held a shop at 36 Montague Street. He also worked as a contractor for film companies, finding Indians (predominantly former lascars and hawkers) for crowd scenes, and in 1942 founded a company named Shah Film Corporation with John Kartar Singh and Herbert Bundy as his co-directors. A highly resourceful individual, during his time in Britain Shah was involved in a number of anti-colonial organizations and activities. Indeed, V. K. Krishna Menon reportedly cultivated Shah because of his connections, especially with working-class Indians in the East End of London.

Government officials first became aware of Shah through his involvement with the London branch of the Indian National Congress in the 1930s. After a brief period of involvement with the East End branch of Menon’s India League, he went on to become a prominent figure in the Committee of Indian Congressmen (led by Amiya Nath Bose and Pulin Behari Seal), under whose auspices he created an Indian National Muslim Committee which was strongly anti-Pakistan. He also aided lascars in their struggle for workers’ rights, acting as a court interpreter for those involved in criminal cases, and was an active member of the Hindustani Social Club.

In addition, Shah was a leading figure in the Jamiat-ul-Muslimin; in the 1940s he held the post of treasurer, and, according to government reports, he was responsible for opening various provincial branches of the organization in Birmingham, Manchester and Glasgow. Shah campaigned for a mosque to serve the Muslim community in the East End of London, and was instrumental in the foundation of the East London Mosque in 1941. He made a speech at its inauguration ceremony, and played a leading role in its management and affairs subsquently. He was the main agitator on behalf of the Jamiat-ul-Muslimin in its struggle against the trustees for control over the mosque in 1943.