- Companies
- Civil engineering
- Gosport
- 4-Site Power & Fibre Networks Ltd
4-Site Power & Fibre Networks Ltd
- Company number
- 12095050
- Incorporated
- 10 Jul 20197 years trading
- Registered office
- 6 Solent Way, Alverstoke, Gosport, PO12 2NS
- Nature of business
- Construction of utility projects for electricity and telecommunications
4-Site Power & Fibre Networks Ltd is a 7-year-old private limited company registered in Gosport, company number 12095050, one of 17 civil engineering contractors in Gosport. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 30 December 2026 is due at HMRC on 30 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £100K (-42.6%) on the year before, to £135K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £2.5M against £2.7M owed within a year: 0.9 times cover.
- 49 employees on average, up from 1 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £135K | £530K | £2.5M | £2.7M | 49 |
| 31 Dec 2024 | £235K | £640K | £2.7M | £2.8M | 1 |
| 31 Dec 2023 | £468K | £645K | £2.2M | £1.9M | 41 |
| 31 Dec 2022 | £201K | £85K | £1.5M | £1.4M | 23 |
| 31 Dec 2021 | £137K | £693 | £547K | £473K | 8 |
| 31 Dec 2020 | -£1,173 | £39K | £110K | £82K | 4 |
Public contracts won
4-Site Power & Fibre Networks Ltd has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Affinity Water Limited | UVDB Powered by Achilles QUDM for Goods, Works and Services | Ceiling, not shown | 19 Aug 2026 |
Where 4-Site Power & Fibre Networks Ltd is registered
The registered office is in Gosport (PO12), in the Gosport local authority area, South East. Show PO12 2NS on a map.
Other trade companies in PO12
- Paws at 32 LtdCleaning companies
- New Horizons (Hampshire) LtdFinishing trades
- Smart Energy Advisers LtdElectricians
- Easy Clean (Southern) LtdCleaning companies
- RHR Energy LtdPlumbers and heating engineers
- Mitchell Tsco LtdCivil engineering
- Lyle Morgans Master Thatcher LtdRoofers
- Pebbles Cleaning Group LtdCleaning companies
Also registered at this address
1 other company uses the same registered office as 4-Site Power & Fibre Networks Ltd.
- 4-Site TM LtdCivil engineering
What happens if 4-Site Power & 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Dec 2027 | £200 |
| 3 months late | 30 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Dec 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
- 12095050
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 July 2019 (7 years ago)
- Registered office
- 6 Solent Way, Alverstoke, Gosport, PO12 2NS
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 30 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 29 June 2026
- Previous names
- 4-Site Fibre Ltd (until 13 Jul 2022)
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 Gosport
Other active civil engineering contractors registered in Gosport.
- 4-Site TM Ltd2019
- Atc Fibre Solutions Ltd2021
- CSSC Projects Ltd2020
- Daniel Davies Engineering Consultancy Ltd2022
- Future Construction Solutions Limited2023
- G C Civils Limited2007
- Hallmark Civil Engineering Ltd2015
- HL Fibre & Construction Ltd2024
All civil engineering contractors in Gosport · All trades in Gosport · Civil engineering across the UK
Frequently asked questions
When are 4-Site Power & Fibre Networks Ltd's accounts due?
4-Site Power & Fibre Networks Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 30 December 2026.
When is 4-Site Power & Fibre Networks Ltd's CT600 due?
The CT600 for the period to 30 December 2026 is due at HMRC by 30 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is 4-Site Power & Fibre Networks Ltd still trading?
4-Site Power & Fibre Networks Ltd is listed as active on the Companies House register (checked 13 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 4-Site Power & Fibre Networks Ltd do?
4-Site Power & Fibre Networks Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is 4-Site Power & Fibre Networks Ltd?
4-Site Power & Fibre Networks Ltd was incorporated on 10 July 2019, 7 years ago.
Has 4-Site Power & Fibre Networks Ltd won public sector contracts?
Yes. 4-Site Power & Fibre Networks Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from AFFINITY WATER LIMITED.
What is the penalty if 4-Site Power & 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 4-Site Power & Fibre Networks Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.