- Companies
- Civil engineering
- Londonderry
- SG-Fibre-Networks Ltd
SG-Fibre-Networks Ltd
- Company number
- NI731647
- Incorporated
- 23 Jul 20251 year trading
- Registered office
- 16 Friel Close, Londonderry, BT48 0QE
- Nature of business
- Construction of utility projects for electricity and telecommunications
SG-Fibre-Networks Ltd is a 1-year-old private limited company registered in Londonderry, company number NI731647, one of 35 civil engineering contractors in Londonderry. Its next accounts are due at Companies House on 23 April 2027, and its first CT600 is due at HMRC on 22 July 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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Who runs and owns SG-Fibre-Networks Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** G*** | Director | Jul 2025 |
Person with significant control
Where SG-Fibre-Networks Ltd is registered
The registered office is in Londonderry (BT48), in the Derry City and Strabane local authority area, Northern Ireland. Show BT48 0QE on a map.
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What happens if SG-Fibre-Networks 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 23 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 24 Apr 2027 to 23 May 2027 | £150 |
| 1 to 3 months late | 24 May 2027 to 23 Jul 2027 | £375 |
| 3 to 6 months late | 24 Jul 2027 to 23 Oct 2027 | £750 |
| More than 6 months late | From 24 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- NI731647
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 July 2025 (1 year ago)
- Registered office
- 16 Friel Close, Londonderry, BT48 0QE
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 17 August 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Londonderry
Other active civil engineering contractors registered in Londonderry.
- Shoreline Utilities Limited2015
- Skilled Operations Ltd2023
- SMS Power Ltd2025
- Star Commercial Properties Limited2021
- T O'Connell (Utilities) Limited2011
- CJCS Contracts Limited2024
- CPF Contracts Ltd2025
- Craig Civils Limited2026
All civil engineering contractors in Londonderry · All trades in Londonderry · Civil engineering across the UK
Frequently asked questions
When are SG-Fibre-Networks Ltd's accounts due?
SG-Fibre-Networks Ltd's next accounts are due at Companies House by 23 April 2027 (in 191 days), covering the period to 31 July 2026.
When is SG-Fibre-Networks 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 22 July 2026, due by 22 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SG-Fibre-Networks Ltd still trading?
SG-Fibre-Networks 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 SG-Fibre-Networks Ltd do?
SG-Fibre-Networks Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is SG-Fibre-Networks Ltd?
SG-Fibre-Networks Ltd was incorporated on 23 July 2025, 1 year ago.
Who runs SG-Fibre-Networks Ltd?
SG-Fibre-Networks Ltd has 1 active director, the longest-serving appointed in Jul 2025. Their names and service addresses are on the Companies House register.
Who owns SG-Fibre-Networks Ltd?
One person or company has significant control of SG-Fibre-Networks Ltd: an individual (owns 75% or more of the shares).
What is the penalty if SG-Fibre-Networks 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 SG-Fibre-Networks 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.