When registering your company, you’ll have to enter SIC codes as part of the process. But what is a SIC code and how do you find out what yours is?

What is a SIC code?

Companies House want to know the nature of your business. This is primarily for statistical analysis and data recording. In order to classify your business, they use the Standard Industrial Classification (SIC) codes. There are full SIC code lists available from the Office of National Statistics, however, when filing with Companies House, they prefer to use the condensed version. Be sure to use the condensed version with Companies House as your filing may otherwise be rejected.

Types of condensed SIC codes

Each SIC code list is split into sections with an overarching theme and each individual code comes with a general description. The sections range from A to U. These sections are:

  • Section A: Agriculture, Forestry and Fishing
  • Section B: Mining and Quarrying
  • Section C: Manufacturing
  • Section D: Electricity, gas, steam and air conditioning supply
  • Section E: Water supply, sewerage, waste management and remediation activities
  • Section F: Construction
  • Section G: Wholesale and retail trade; repair of motor vehicles and motorcycles
  • Section H: Transportation and storage
  • Section I: Accommodation and food service activities
  • Section J: Information and communication
  • Section K: Financial and insurance activities
  • Section L: Real estate activities
  • Section M: Professional, scientific and technical activities
  • Section N: Administrative and support service activities
  • Section O: Public administration and defence; compulsory social security
  • Section P: Education
  • Section Q: Human health and social work activities
  • Section R: Arts, entertainment and recreation
  • Section S: Other service activities
  • Section T: Activities of households as employers; undifferentiated goods- and services- producing activities of households for own use
  • Section U: Activities of extraterritorial organisations and bodies

Even if you are filing a dormant company (99999) or a non-trading company (74990), you’ll have to use their relevant SIC codes.

Finding out your SIC code

It may sound daunting, but it is actually really easy to find your SIC code. Companies House has a condensed code list with a search function where you can search your type of industry (e.g. “farming”) and it’ll pull the relevant results. Alternatively, during our order process, our SIC code section has a search function as well. You can either directly type your SIC code in or search for your relevant industry and it’ll pull a list for you to choose from.