Notably, he was the father of Pengiran Anak Saleha, the raja isteri (queen consort) to Sultan Hassanal Bolkiah, and the maternal grandfather of Al-Muhtadee Billah, the Crown Prince of Brunei.

[2][8] Pengiran Anak Mohamed Alam began his career as a clerk at the Land Office in 1937 before transferring to the Judicial Department in 1940 and becoming a magistrate in 1948.

[9] The following year, he was part of the Bruneian delegation that accompanied Sultan Omar Ali Saifuddien III on his hajj pilgrimage in Mecca.

[15] In June 1959, Pengiran Anak Mohamed Alam was appointed chairman of the grand committee responsible for organising the royal visit of Tuanku Abdul Rahman, the Yang di-Pertuan Agong, to Brunei.

[18][15][19] Pengiran Anak Mohamed Alam was among the dignitaries who attended the signing of Brunei's written constitution and the new agreement with the United Kingdom at the Lapau on 29 September 1959.

[2] In April, Pengiran Anak Mohamed Alam was part of the delegation accompanying the sultan of Brunei to Kuala Lumpur for the funeral ceremony of Tuanku Abdul Rahman.

[2] Pengiran Anak Mohamed Alam officially opened the review grade for headmasters of Malay schools in Brunei on 10 January, emphasising the course's role in improving education and hoping for positive results, while also holding a moment of silence in memory of James Pearce.

[31] He was among the distinguished guests who witnessed Brunei Malay Regiment's first-ever military parade at Padang Besar on 9 November, alongside other state officials.

[32] In May 1962, a Regency Council was established while the sultan was performing the hajj, with Pengiran Anak Mohamed Alam playing a key role in overseeing its functions.

[34] Following the Brunei revolt in December, Pengiran Anak Mohamed Alam, alongside other high-ranking officials, reaffirmed their unwavering loyalty to the sultan.

[35] Pengiran Anak Mohamed Alam was appointed regent in February 1963 during the sultan's absence, as the ruler traveled to Kuala Lumpur with other members of the royal family.

[44] He and Pengiran Muhammad Yusuf represented the sultan of Brunei at the coronation of Yang Di-Pertuan Agong, Tuanku Ismail Nasiruddin Shah, in Kuala Lumpur on 10 April.

[47] After 17 years in power, Sultan Omar Ali Saifuddien III voluntarily abdicated on 4 October 1967, allowing his 21-year-old eldest son, Crown Prince Hassanal Bolkiah, to assume the throne.

[11] On 14 December 1982, Pengiran Anak Mohamed Alam died at the age of 69 at his residence near Istana Darul Hana, Jalan Tutong.