UK SIC 2007 code in Section O: Public administration and defence; compulsory social security
84300 Compulsory social security activities
SIC 84300 is the UK code for compulsory social security activities. Companies House accepts it when you register a company or file a confirmation statement.
- Code
- 84300 (UK SIC 2007, Companies House list)
- Section
- Section O: Public administration and defence; compulsory social security
- Division
- 84 Public administration and defence; compulsory social security
- SIC 2026
- 84.30 Compulsory social security activities (1:1)
- Closest US NAICS
- 923130
Activities ONS lists under 84300
The ONS index assigns these 8 activities to this code. If one describes your company, this is the code to use.
- Compulsory social security administration concerning family and child benefits
- Compulsory social security administration concerning government employee pension schemes
- Compulsory social security administration concerning permanent loss of income due to disablement
- Compulsory social security administration concerning retirement pensions
- Compulsory social security administration concerning unemployment benefits
- Compulsory social security administration of sickness, maternity or temporary disablement benefits
- Funding and administration of government provided retirement pensions,
- Funding and administration of government provided sickness, work-accident and unemployment insurance
Source: ONS UK SIC 2007 alphabetical index.
What changes in SIC 2026
ONS published UK SIC 2026 in 2026. Its correspondence table maps this code's class (84.30) to:
| SIC 2026 code | Heading | Link type |
|---|---|---|
| 84.30 | Compulsory social security activities | 1:1 |
"1:1" means the class carries over unchanged in scope; other link types mean it was split or merged. Companies House still uses SIC 2007, so keep filing with 84300 until it announces a switch.
Closest US NAICS codes
Matched through the shared international class (ISIC Rev. 4). Treat these as a starting point and read the definition before using one.
Data last changed November 14, 2026. Source: Companies House condensed SIC list. How this page is built.