The classification provides a framework for the collection, tabulation, presentation and analysis of data, and its use promotes uniformity.

In addition, it can be used for administrative purposes and by non-government bodies as a convenient way of classifying industrial activities into a common structure.

Since 1948 the classification has been revised in 1958, 1968, 1980, 1992, 1997, and 2003.

Please note:

The ONS currently receives queries from individual companies requesting the appropriate Standard Industrial Classification (SIC) code. Please note, that from 20 September 2019, the ONS will no longer be supporting these requests. If you require an SIC code for your company, please see the resources available on this page, including the SIC Main Volume (PDF 1,294 KB), Index (XLS 2,919 KB) and Interactive Hierarchy. Any questions relating to a form or application that you are completing should be directed to the issuing body. Please note, as UK SIC is a statistical classification, we will continue to assist with any queries you have in respect to the framework, structure or methodology of the system.

Office for National Statistics
Classifications Unit
Government Buildings
Cardiff Road
South Wales
NP10 8XG