Change your SIC code quickly and hassle-free
Need to update your business activity? Change your SIC code at Companies House with ease. Online Filings handles the update through your Confirmation Statement and ensures full compliance.
Find your company to update its activity:
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Trusted by businesses for accurate SIC code updates
Quick and smooth
Simple, quick and stress-free. Changed my SIC code in less than 10 minutes.
Alicia M., Bristol
11 Mar 2024
Sonia was brilliant
Sonia guided me through the whole process and made sure I got it right the first time.
Karim T., Manchester
2 Feb 2025
Perfect for non-tech people
I'm not great with admin, but this made the SIC code update feel effortless.
Helen G., Norwich
14 Sep 2024
João was super helpful
João answered all my questions over chat—fast replies and super clear guidance!
Greg F., Leeds
27 Apr 2025
Great service and support
Efficient service and friendly support. Highly recommend for any company changes.
Nina S., London
5 Jun 2024
Quick and smooth
Simple, quick and stress-free. Changed my SIC code in less than 10 minutes.
Alicia M., Bristol
11 Mar 2024
Sonia was brilliant
Sonia guided me through the whole process and made sure I got it right the first time.
Karim T., Manchester
2 Feb 2025
Perfect for non-tech people
I'm not great with admin, but this made the SIC code update feel effortless.
Helen G., Norwich
14 Sep 2024
João was super helpful
João answered all my questions over chat—fast replies and super clear guidance!
Greg F., Leeds
27 Apr 2025
Great service and support
Efficient service and friendly support. Highly recommend for any company changes.
Nina S., London
5 Jun 2024
Quick and smooth
Simple, quick and stress-free. Changed my SIC code in less than 10 minutes.
Alicia M., Bristol
11 Mar 2024
Sonia was brilliant
Sonia guided me through the whole process and made sure I got it right the first time.
Karim T., Manchester
2 Feb 2025
Perfect for non-tech people
I'm not great with admin, but this made the SIC code update feel effortless.
Helen G., Norwich
14 Sep 2024
João was super helpful
João answered all my questions over chat—fast replies and super clear guidance!
Greg F., Leeds
27 Apr 2025
Great service and support
Efficient service and friendly support. Highly recommend for any company changes.
Nina S., London
5 Jun 2024
Quick and smooth
Simple, quick and stress-free. Changed my SIC code in less than 10 minutes.
Alicia M., Bristol
11 Mar 2024
Sonia was brilliant
Sonia guided me through the whole process and made sure I got it right the first time.
Karim T., Manchester
2 Feb 2025
Perfect for non-tech people
I'm not great with admin, but this made the SIC code update feel effortless.
Helen G., Norwich
14 Sep 2024
João was super helpful
João answered all my questions over chat—fast replies and super clear guidance!
Greg F., Leeds
27 Apr 2025
Great service and support
Efficient service and friendly support. Highly recommend for any company changes.
Nina S., London
5 Jun 2024
Done in minutes
Updated our SIC code while on the train. Whole process took under 5 minutes.
Lucas B., Cardiff
18 Dec 2024
Really well designed
Easy to use dashboard and clear instructions. Filing was seamless.
Emma R., Liverpool
9 Nov 2024
Sonia made it easy
I had no clue where to start. Sonia walked me through everything—absolute legend.
Oliver J., Brighton
22 Jan 2025
João knows his stuff
Needed to make changes quickly. João handled it all efficiently and professionally.
Priya D., Birmingham
30 Oct 2024
Fast and accurate
Great experience from start to finish. Filing was accepted the same day.
Ben C., Edinburgh
3 Jan 2025
Done in minutes
Updated our SIC code while on the train. Whole process took under 5 minutes.
Lucas B., Cardiff
18 Dec 2024
Really well designed
Easy to use dashboard and clear instructions. Filing was seamless.
Emma R., Liverpool
9 Nov 2024
Sonia made it easy
I had no clue where to start. Sonia walked me through everything—absolute legend.
Oliver J., Brighton
22 Jan 2025
João knows his stuff
Needed to make changes quickly. João handled it all efficiently and professionally.
Priya D., Birmingham
30 Oct 2024
Fast and accurate
Great experience from start to finish. Filing was accepted the same day.
Ben C., Edinburgh
3 Jan 2025
Done in minutes
Updated our SIC code while on the train. Whole process took under 5 minutes.
Lucas B., Cardiff
18 Dec 2024
Really well designed
Easy to use dashboard and clear instructions. Filing was seamless.
Emma R., Liverpool
9 Nov 2024
Sonia made it easy
I had no clue where to start. Sonia walked me through everything—absolute legend.
Oliver J., Brighton
22 Jan 2025
João knows his stuff
Needed to make changes quickly. João handled it all efficiently and professionally.
Priya D., Birmingham
30 Oct 2024
Fast and accurate
Great experience from start to finish. Filing was accepted the same day.
Ben C., Edinburgh
3 Jan 2025
Done in minutes
Updated our SIC code while on the train. Whole process took under 5 minutes.
Lucas B., Cardiff
18 Dec 2024
Really well designed
Easy to use dashboard and clear instructions. Filing was seamless.
Emma R., Liverpool
9 Nov 2024
Sonia made it easy
I had no clue where to start. Sonia walked me through everything—absolute legend.
Oliver J., Brighton
22 Jan 2025
João knows his stuff
Needed to make changes quickly. João handled it all efficiently and professionally.
Priya D., Birmingham
30 Oct 2024
Fast and accurate
Great experience from start to finish. Filing was accepted the same day.
Ben C., Edinburgh
3 Jan 2025
Change your limited company activity: 3 easy steps
Step 1
Find Your Company
Step 2
Update Your SIC Codes
Step 3
Submit & Relax
Find your company
Why use Online Filings to change your company activity?
Authorised by Companies House
We’re a Companies House authorised corporate service provider and secretarial software provider—trusted by over 200,000 entrepreneurs.
Update from Any Device
Change your SIC code in minutes from your mobile, tablet, or desktop. No paperwork, no printing—fully online.
Support You Can Rely On
Need help? Our team is available by phone, email, or live chat—before, during, and after your filing.
Changing your SIC code: FAQs
Everything you need to know about changing your sic code
Can’t find an answer?
A SIC (Standard Industrial Classification) code identifies your company’s main business activity on the Companies House public register.
An up-to-date SIC code ensures legal compliance, public accuracy, and helps HMRC and other agencies understand your operations.
Using the wrong SIC code may affect VAT setup, R&D claims, or trigger audit flags. It can also cause errors in official records and filings.
Yes. HMRC uses your SIC code to assess eligibility for VAT, R&D tax credits, and other schemes—so accuracy is key.
Yes. Your SIC code is public. Having the right one helps ensure your business is represented professionally and credibly.
You update your SIC code by filing a Confirmation Statement with Companies House. Online Filings can do this for you quickly online.
If your business activity has changed or you used the wrong code when registering, update it as soon as possible.
Yes. We handle the Confirmation Statement and file your SIC code update electronically with Companies House.
Once the Confirmation Statement is filed and accepted, changes are usually reflected on the Companies House register in 1–2 working days.
Can’t find an answer?
Where Business Admin Meets Real Efficiency
Ready to update your company's business activity?
Change Company Activities
Prefer to speak with someone?
Call 020 4538 3610
or email us at support@onlinefilings.co.uk