‘Who’s Who’ was a confidential report published by the Political & Secret Department, Government of British India in 1933. This confidential report briefly introduces Shah Jahan Khan, Nawab of Dir in such a manner:
Nawab Shah Jahan Khan was born in 1897. He is the eldest son of Badshah Khan, late Nawab of Dir. He was recognised as the heir-apparent and a Khan Bahadur in 1918. At his father’s death in 1925 there were two factions, one of which attempted to secure the succession for the younger brother, Alamzeb Khan. Government support however proved decisive and Shah Jahan Khan succeeded without bloodshed and was recognized as Nawab by Government in May 1925.He has an indifferent reputation for sincerity among his partisans, but is extremely loyal to the Government and is working hard to re-establish the efficiency of a rule, which has suffered much during his father’s later years. In June 1928 on grounds of disloyalty, he ejected Mohammad Alamzeb Khan from Jandul which had been given to him for his maintenance. He has since continued to consolidate his position, though his control over his own tribe, the Painda Khel is imperfect. In 1932, he succeeded in beating off the combined attacks of the Faqir of Alingar and Mohammad Alamzeb Khan on Jandul and subsequently in the same year conducted the Chitral Relief Columns through his country in safety despite the threatening tribal situation. Still cherishes hopes of recovering the lost Dir territory in the Swat Valley and also has ideas of expansion towards Bajaur. He was made a K. B. E in 1933.