UK SIC 2007 · 80100
Private security activities
Private security activities is UK SIC code 80100, part of division 80 (Security and investigation activities) in the SIC 2007 classification. As of the July 2026 Companies House register, 14,563 active UK companies list 80100 among their SIC codes, and 11,503 list it as their first code. That makes it the most used code in its division.
As of the July 2026 Companies House register, 14,563 active UK companies list 80100 among their SIC codes (11,503 as their first code).
Companies House data refreshed daily. Page reviewed July 2026.
Division 80: Security and investigation activities
Security and investigation activities divides into two main populations. 80100, private security activities, holds manned guarding, door supervision and close protection companies, a labour-intensive trade where contracts and licensed staff are the whole business. 80200 covers security systems services, the firms installing and monitoring alarms, CCTV and access control, which behave more like specialist electrical contractors. The two buy very differently and should rarely share a campaign, and both include many small subcontractor companies formed around a single client relationship.
Guarding firms under 80100 are prospected by workforce management software vendors, payroll and invoice finance providers and insurers, with SIA licensing consultants targeting new incorporations before their first contract lands. Systems installers under 80200 attract wholesale equipment distributors, monitoring station partnerships and the accreditation bodies whose inspectorate badges unlock commercial work. In both camps, winning a large contract forces sudden hiring or stock purchases, so visible growth is the strongest buying signal, and filing deadlines flag thinly-run firms needing back-office help.
Related SIC codes
80200, Security systems service activitiesWhere SIC 80100 clusters in the UK
About SIC 80100
How many UK companies use SIC code 80100?
14,563 active UK companies include 80100 (Private security activities) among their up-to-four registered SIC codes, of which 11,503 list it first. Figures are from the July 2026 Companies House register snapshot, counting active companies only.
Does registering a security SIC code mean the company holds SIA licences?
No. SIC codes are self-declared at Companies House with no vetting, whereas Security Industry Authority licensing applies to individuals carrying out licensable roles such as guarding and door supervision, and the voluntary Approved Contractor Scheme applies to businesses. A company can sit under 80100 while holding no licences at all, so prospectors and buyers should verify SIA status separately from the register.
Which SIC code should a CCTV and alarm installation business use?
80200, security systems service activities, is the standard fit for installing and monitoring alarms, CCTV and access control. Some installers also register an electrical installation code from division 43, which Companies House permits since each company may hold up to 4 codes. Codes are set at incorporation and changed via the confirmation statement (CS01), with no approval process either way.
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