There is currently no technical standard required for Access Control licensing. The PSA have issued a document defining Access Control.
For first time entrants looking for an Access Control installation license independent of Intruder Alarms and/or CCTV, it is required to first become certified to SR 40:2005.
For first time entrants looking for an Access Control Installation license together with Intruder Alarm and/or CCTV installation, it is required to obtain a temporary license from the PSA (see Intruder Alarm or CCTV for further information).
SR 40: EQA have produced a guidance document on SR 40 (Link). This standard includes sections on Company Organization (e.g. Tax Clearance and Insurance), Staffing (e.g. Selection and Screening of Staff), Training and Operations.