[5] It broadened its activities following World War II by creating a cooperative to promote Malay involvement in business and was instrumental in the founding of Barisan Pemuda (BARIP), Brunei's first nationalist organisation.

After World War II, PGGMB reformed to improve the living standards of Malay teachers by founding the Iktisad Guru-Guru Melayu Brunei (IGGMB) cooperative.

[6] Despite its initial focus on welfare and education, PGGMB became a significant player in fostering Malay nationalism and assisting the emergence of post-World War II political groups.

[13] Pengiran Muhammad Ali was a key figure in establishing the PGGMB's Syarikat Kerjasama dan Bantu-Membantu (SKS & BM),[9] which was officially registered on 14 January 1953.

The primary aim of this cooperative was to train PGGMB members to work together and provide mutual assistance in achieving specific goals by borrowing from a communal savings fund.

Strategic investments undertaken by the association include the 1993 ASEAN Nestle AIJV, the 1994 acquisition of two Beribi store units, and the 1994 purchase of four houses in Kampong Sungai Hanching.

The establishment of PGGMB Secondary School in 2001, the investment in the Australian Technology Park in Sydney in 2000, and the construction of three shop units on Jalan Gadong, Kampong Beribi, Jangsak in 1998 all contributed to the continued prosperity of the economy.

[15] The PGGMB water fountain monument was constructed in 1975 close to the Kianggeh Food Court to honour Sultan Hassanal Bolkiah and Pengiran Anak Saleha's royal marriage in 1965.