Worldwide, countries have showing great consideration on crime control and prevention within the community for the purpose of enhancing public security. Governments, or public law enforcement agencies - individuals, communities, non-governmental organizations, civil society and the private sectors have all played a role in enhancing security and community safety. The study aims to determine the perceptions of the clients towards Private Security Companies have their role in terms of providing public security and safety, to explore the attitudes of the Tanzania police force towards the Private Security Companies in IIala Municipal. The study adopted descriptive research design, the study used Slovene's Formula to obtain a sample size of 205 respondents from the target population for this study constituted of 2 private security companies (MKB and MOKU), 270 security guards, 80 clients, and 70 Police officers making 420 in a total, structured questionnaire was used to collect primary data, data was analyzed using a descriptive statistic, the study concluded that Tanzania police need to continue to work in collaboration with PSCs to combat crime in promoting public safety and there was A good link between TPF and PSC in promoting public security in Tanzania. The study recommended that PSCs and police need to strengthen especially in areas of investigation of crime, training of security companies, registration of these companies and the process needed to acquire firearms and other security-related equipment that needed in promoting Public security also the study recommended that further study should be conducted concerning rules and policy governing private security company operations in Tanzania.