Find the right Standard Industrial Classification (SIC) code for your business by activity or keyword. Required for Companies House registration.
A SIC (Standard Industrial Classification) code is a five-digit number that identifies the primary activity of your business. UK Companies House requires every limited company to declare at least one SIC code at incorporation, and an updated list on every Confirmation Statement (CS01). The UK uses the SIC 2007 list, maintained jointly by the Office for National Statistics and Companies House. Pick the code that most closely matches what you actually do — the wrong code can affect tax classification, lender or insurance categorisation, and statistical reporting. Search below by keyword.
Practical support for real business setup decisions.
Describe your business or search by keyword to find likely SIC code matches.
Choose the code that best matches your main revenue-generating activity.
Some businesses may reasonably fit several related codes.
Vague descriptions make it harder to choose the right code confidently.
Choosing the right code helps keep business formation and reporting cleaner.
This tool provides practical guidance based on SIC code descriptions. If your business activity is complex or mixed, a manual review may still be sensible before filing.
RR Accountants helps founders and growing businesses with company formation, SIC code selection, bookkeeping, VAT setup, payroll, and year-end compliance.
RR Accountants supports founders and growing businesses with company formation, bookkeeping, VAT, payroll, tax planning, and practical setup advice.
This tool is for general guidance only and does not constitute legal, tax, or filing advice. Results are based on SIC code description matching.