SIC Codes
Understand UK SIC codes, what they mean, and how they map to other classification systems.
SIC codes, short for Standard Industrial Classification, are the codes Companies House uses to describe what a company does. Every UK company chooses one or more SIC codes when it registers, and they are the primary way to filter and segment the register by industry.
These guides cover what SIC codes are, how to find the right one for a business, how the 2007 UK SIC list is structured into sections, and how UK SIC codes map to the EU's NACE and the US NAICS systems for cross-border work.
Understanding SIC codes
What SIC codes are and how to find the right one.
SIC Code Sections: A Complete Overview
A structured overview of all 21 SIC code sections, what industries they cover, and the most commonly used codes in each section.
6 minHow to Find the Right SIC Code for Your Business
How to find the correct SIC code for your business when registering with Companies House, plus common mistakes and the most popular codes.
6 minConversions & mappings
How UK SIC codes map to NACE and NAICS.
SIC, NACE and NAICS Codes Explained: UK, EU and US Industry Classifications
How UK SIC, EU NACE and US NAICS industry codes relate and how to convert between them.
6 minSIC to NACE Conversion: How UK SIC Codes Map to EU NACE Codes
How UK SIC 2007 codes map to EU NACE Rev 2 codes, with a worked conversion and examples.
5 min