Before we discuss how to change a SIC code, it is important to understand what it actually is!
What is a SIC code?
Standard Industrial Classification (SIC) codes are used to classify and identify a company’s main business activities, i.e. what the company does.
Limited companies are required to choose up to four SIC codes and provide them on the company formation application form and the first annual confirmation statement (previously known as an annual return). These are not legally binding, meaning that your activities are not strictly limited to what you report your SIC(s) as. It is, however, a case of best practice to ensure these are regularly updated in order to accurately reflect the operations of your company.
This provides Companies House, the Office for National Statistics (ONS) and other government bodies with a comprehensive framework of data and insight into UK businesses and industries.
Change a SIC code by filing an annual return
If you find you need to change a SIC code for any reason (perhaps you entered the wrong code in your company registration form or a previous annual return/confirmation statement, or the principal activities of your business has changed) you can do this when you file your next confirmation statement. There is no need to change it before the filing deadline, but you can send an early confirmation statement if you want.
You can find your company’s SIC code(s) in Companies House’ latest version of SIC 2007. Alternatively, if you are currently using the 2003 version of SIC codes, you will need to change the existing code to the 2007 equivalent, which can be found in the SIC Conversion Table.