In this chapter, the methods used by the Special Branch in obtaining intelligence will be discussed, together with the system used to evaluate and grade information. A description will be provided, too, of the CPM's/MNLA's hierarchical structure and organisation. This chapter will also examine how intelligence collected in the Malayan region, including Special Branch intelligence, fitted in with the overall British intelligence picture. The role of SIFE, the combined MI5/MI6 intelligence centre for the Far East, based in the sprawling Singapore offices of the British Commissioner-General for South East Asia will be looked at, as well as SIFE's relationship with the British Joint Intelligence Committee (Far East).

Throughout the Emergency, the Special Branch depended heavily on what is referred to in the intelligence community as HUMINT, or human intelligence, rather than technical intelligence. Although the Special Branch was successful in planting agents in the Min Yuen, in detention camps and New Villages, and penetrating the communist courier system, it did not meet with the same success in planting agents in the ranks of the CPM and its military arm, the MNLA, in the jungle. The CTs were extremely suspicious of outsiders. Rather, the Special Branch was able to construct de novo a comprehensive picture of the CPM's/MNLA's structure and organisation from information obtained from the interrogation of captured and surrendered guerrillas, as well as the careful examination and analysis of captured communist documents. Captured and surrendered CTs were an unrivalled and unique source of intelligence, as they were able to provide information about the inner workings of the CPM/MNLA that was not available from any other source in the intelligence war.