Level 2 Award for Working as a Security Officer within the Private Security Industry SIA Security Guarding App includes questions covering following subjects : -Unit 1: Working in The Private Security Industry -Unit 2: Working as a Security Officer -Unit 3: Conflict Management for The Private Security Industry To work in the private security industry you must hold a licence granted by the Security Industry Authority (SIA). Working without an SIA licence is a criminal offence. Roles available with an SIA Security Guard Licence, including: Manned Guarding Patrol Officer Key-Holders Site Security Retail Security Officer Building Reception