Limited companies must provide between one and four SIC codes to Companies House to specify what kinds of business activities they carry out. You can change a SIC code with relative ease whenever the need arises, whether that’s because you’ve provided the wrong code(s) or your company’s activities have changed or diversified since incorporation.
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 select the most appropriate SIC code(s) and provide this information on the company formation application form and the first annual Confirmation Statement (previously known as an annual return). SIC codes are not overly rigid or, so your business activities are not strictly limited to the SIC code(s) you provide.
That being said, it is best practice to ensure that your SIC codes are regularly reviewed and updated where necessary to accurately reflect the operations of your company.
By doing so, you are providing 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 a confirmation statement
If you find that you need to change a SIC code for any reason, you can do this when you file your next annual Confirmation Statement at Companies House. There is no need to update SIC codes before your Confirmation Statement is due, but you file and early statement if you wish to do so.
You can find your company’s SIC code(s) in the latest version of SIC 2007 at Companies House. Alternatively, if you are currently using the 2003 version of SIC codes, you will need to change them to the 2007 equivalents, which can be found in the SIC Conversion Table.