- Door Supervision
- Maintaining order at licensed premises, nightclubs, pubs, and events (Schedule 2, paragraphs 2 and 8)
- Security Guard
- Guarding premises, property, or persons against unauthorised access, damage, or disorder (Schedule 2, paragraph 2)
- Close Protection
- Personal protection of individuals (bodyguarding) (Schedule 2, paragraph 2(1)(c))
- CCTV (Public Space Surveillance)
- Monitoring CCTV systems used for the surveillance of members of the public (Schedule 2, paragraph 2)
- Cash and Valuables in Transit
- Transporting cash or valuables as vehicle crew (Schedule 2, paragraph 2)
- Key Holding
- Custody of keys, responding to alarms, and securing premises on behalf of others (Schedule 2, paragraph 6)
SIA licences are divided into linked and non-linked sectors. Door Supervision and Security Guarding are linked sectors, meaning a single licence covers both activities. All other sectors (Close Protection, CCTV, Cash and Valuables in Transit, Key Holding) are non-linked and require a separate licence for each activity.
Vehicle Immobiliser licences were discontinued in Great Britain on 1 October 2012 when the Protection of Freedoms Act 2012 made private wheel clamping a criminal offence in England and Wales. Vehicle immobilisation remains a licensable front-line activity in Northern Ireland, where it is still permitted.