UK SICUnited Kingdom2026
UK Standard Industrial Classification
The UK Standard Industrial Classification 2026 is maintained by the ONS and aligned with ISIC Revision 5, extending the international classes with UK-specific 5-digit subclasses.
How a UK SIC code is built
Each digit narrows the activity from the broadest sector down to a specific national industry. Here's how 01.11 decomposes:
A · 01.11
A
01
01.1
01.11
Structure at a glance
Browse sections
AAgriculture, forestry and fishingBMining and quarryingCManufacturingDElectricity, gas, steam and air conditioning supplyEWater supply; sewerage, waste management and remediation activitiesFConstructionGWholesale and retail tradeHTransportation and storageIAccommodation and food service activitiesJPublishing, broadcasting, and content production and distribution activitiesKTelecommunication, computer programming, consulting, computing infrastructure and other information service activitiesLFinancial and insurance activitiesMReal estate activitiesNProfessional, scientific and technical activitiesOAdministrative and support service activitiesPPublic administration and defence; compulsory social securityQEducationRHuman health and social work activitiesSArts, sports and recreationTOther service activitiesUActivities of households as employers and undifferentiated goods - and service-producing activities of households for own useVActivities of extraterritorial organisations and bodies
History
Introduced as UK SIC 2026 to align with ISIC Revision 5, replacing the 2007 edition. Used for Companies House registration and ONS statistics, with national detail carried in 5-digit subclasses.
Usage & importance
Required for Companies House registration of every UK company and used across ONS economic statistics.
Revision timeline
1948
First UK SIC
Post-war statistics
1980
1980 revision
Modernization
1992
1992 revision
European alignment
2007
UK SIC 2007
Previous edition
2026
UK SIC 2026
Current edition (ISIC Rev 5)
Convert UK SIC codes to any other system
Verified crosswalks between UK SIC and the other ten systems, both sides clickable.