- Companies
- Builders
- Colchester
- Sammatrix Limited
Sammatrix Limited
- Company number
- 16708725
- Incorporated
- 10 Sep 20251 year trading
- Registered office
- 18 Cyril Child Close, Colchester, CO4 3XU
- Nature of business
- Construction of domestic buildings; Business and domestic software development; Information technology consultancy activities; Data processing, hosting and related activities
Sammatrix Limited is a 1-year-old private limited company registered in Colchester, company number 16708725, one of 312 building contractors in Colchester. Its next accounts are due at Companies House on 10 June 2027, and its first CT600 is due at HMRC on 9 September 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Sammatrix Limited is registered
The registered office is in Colchester (CO4), in the Colchester local authority area, East of England. Show CO4 3XU on a map.
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What happens if Sammatrix Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 10 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Jun 2027 to 10 Jul 2027 | £150 |
| 1 to 3 months late | 11 Jul 2027 to 10 Sep 2027 | £375 |
| 3 to 6 months late | 11 Sep 2027 to 10 Dec 2027 | £750 |
| More than 6 months late | From 11 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16708725
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 September 2025 (1 year ago)
- Registered office
- 18 Cyril Child Close, Colchester, CO4 3XU
- Nature of business
- Construction of domestic buildings (SIC 41202)
Business and domestic software development (SIC 62012)
Information technology consultancy activities (SIC 62020)
Data processing, hosting and related activities (SIC 63110) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 19 June 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Colchester
Other active building contractors registered in Colchester.
- Seven Contracts Essex Limited2025
- Shipp Builders Limited2005
- SJN Limited1996
- SJR Group Ltd2022
- Smith Build Construction Limited2022
- Solar Wise Roofing and Building Services Ltd2020
- Solomon Building Ltd2016
- SS Builders (Essex) Ltd2017
All building contractors in Colchester · All trades in Colchester · Builders across the UK
Frequently asked questions
When are Sammatrix Limited's accounts due?
Sammatrix Limited's next accounts are due at Companies House by 10 June 2027 (in 241 days), covering the period to 30 September 2026.
When is Sammatrix Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 9 September 2026, due by 9 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sammatrix Limited still trading?
Sammatrix Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Sammatrix Limited do?
Sammatrix Limited is registered under Construction of domestic buildings (SIC 41202); Business and domestic software development (SIC 62012); Information technology consultancy activities (SIC 62020); Data processing, hosting and related activities (SIC 63110).
How old is Sammatrix Limited?
Sammatrix Limited was incorporated on 10 September 2025, 1 year ago.
What is the penalty if Sammatrix Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Sammatrix Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.