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- Sec-Dci Infrastructure Ltd
Sec-Dci Infrastructure Ltd
- Company number
- 16724342
- Incorporated
- 17 Sep 20251 year trading
- Registered office
- Unit A, 82 James Carter Road, Mildenhall, Suffolk, IP28 7DE
- Nature of business
- Construction of commercial buildings; Site preparation; Electrical installation; Other engineering activities
Sec-Dci Infrastructure Ltd is a 1-year-old private limited company registered in Mildenhall, company number 16724342, one of 31 building contractors in Mildenhall. Its next accounts are due at Companies House on 17 June 2027, and its first CT600 is due at HMRC on 16 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.
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Where Sec-Dci Infrastructure Ltd is registered
The registered office is in Mildenhall (IP28), in the West Suffolk local authority area, East of England. Show IP28 7DE on a map.
Other trade companies in IP28
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- Palatone LtdRepair services
- Local Roofing N Chimneys LimitedRoofers
- SC Joinery and Building Solutions LtdBuilders
- Scuffiq LtdMechanics and garages
- DG Classic Cars LtdMotor traders
- E.B. Fitch Historic Buildings Specialists LtdPainters and decorators
Shared registered office
204 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Sec-Dci Infrastructure Ltd 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 17 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Jun 2027 to 17 Jul 2027 | £150 |
| 1 to 3 months late | 18 Jul 2027 to 17 Sep 2027 | £375 |
| 3 to 6 months late | 18 Sep 2027 to 17 Dec 2027 | £750 |
| More than 6 months late | From 18 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
- 16724342
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 September 2025 (1 year ago)
- Registered office
- Unit A, 82 James Carter Road, Mildenhall, Suffolk, IP28 7DE
- Nature of business
- Construction of commercial buildings (SIC 41201)
Site preparation (SIC 43120)
Electrical installation (SIC 43210)
Other engineering activities (SIC 71129) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 16 September 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 Mildenhall
Other active building contractors registered in Mildenhall.
- Standout Brickwork Ltd2023
- Stokes Homes Limited2018
- Stonebridge Civils Ltd2023
- Super Mercat 786 Limited2025
- TN’S Speedy Ltd2025
- Velmount Ltd2026
- Yadame Properties Ltd2025
- Abbeystock Limited2025
All building contractors in Mildenhall · All trades in Mildenhall · Builders across the UK
Frequently asked questions
When are Sec-Dci Infrastructure Ltd's accounts due?
Sec-Dci Infrastructure Ltd's next accounts are due at Companies House by 17 June 2027 (in 247 days), covering the period to 30 September 2026.
When is Sec-Dci Infrastructure Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 16 September 2026, due by 16 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 Sec-Dci Infrastructure Ltd still trading?
Sec-Dci Infrastructure Ltd 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 Sec-Dci Infrastructure Ltd do?
Sec-Dci Infrastructure Ltd is registered under Construction of commercial buildings (SIC 41201); Site preparation (SIC 43120); Electrical installation (SIC 43210); Other engineering activities (SIC 71129).
How old is Sec-Dci Infrastructure Ltd?
Sec-Dci Infrastructure Ltd was incorporated on 17 September 2025, 1 year ago.
What is the penalty if Sec-Dci Infrastructure Ltd 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 Sec-Dci Infrastructure Ltd 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.