- Companies
- Civil engineering
- Cambrian Civil Engineering Ltd
Cambrian Civil Engineering Ltd
- Company number
- 15085107
- Incorporated
- 21 Aug 20233 years trading
- Registered office
- Cambrian Civil Engineering Skew Bridge Yard, Wentloog Road, Rumney, Cardiff, CF3 1EY
- Nature of business
- Construction of other civil engineering projects n.e.c.
Cambrian Civil Engineering Ltd is a 3-year-old private limited company registered in Rumney, company number 15085107, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 up £75K (+160.6%) on the year before, to £122K.
- Current assets of £461K against £356K owed within a year: 1.3 times cover.
- 4 employees on average, up from 2 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £122K | £33K | £461K | £356K | 4 |
| 31 Aug 2024 | £47K | £25K | £175K | £136K | 2 |
Public contracts won
Cambrian Civil Engineering Ltd has 3 public sector contract awards on record; the ones with their own published value total £35K, from 2024 to 2026. Source: Contracts Finder and Find a Tender award notices. For 2 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. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Surrey Heath Borough Council1 award
- Wessex Water Services Ltd1 award
- Tewkesbury Borough Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Surrey Heath Borough Council | New Pathway at Chobham Water Meadows SANG | £35K | 10 Jul 2026 |
| Wessex Water Services Ltd | Design and Build Contractors (Minor Works) Framework Agreement | Ceiling, not shown | 12 Sep 2024 |
| Tewkesbury Borough Council | Bin Installations Across Tewkesbury Borough - Award | Ceiling, not shown | 24 May 2024 |
Where Cambrian Civil Engineering Ltd is registered
The registered office is in Rumney (CF3), in the Cardiff local authority area, Wales. Show CF3 1EY on a map.
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What happens if Cambrian Civil Engineering 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 15085107
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2023 (3 years ago)
- Registered office
- Cambrian Civil Engineering Skew Bridge Yard, Wentloog Road, Rumney, Cardiff, CF3 1EY
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 20 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
Other active civil engineering contractors.
Frequently asked questions
When are Cambrian Civil Engineering Ltd's accounts due?
Cambrian Civil Engineering Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Cambrian Civil Engineering Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Cambrian Civil Engineering Ltd still trading?
Cambrian Civil Engineering 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 Cambrian Civil Engineering Ltd do?
Cambrian Civil Engineering Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Cambrian Civil Engineering Ltd?
Cambrian Civil Engineering Ltd was incorporated on 21 August 2023, 3 years ago.
Has Cambrian Civil Engineering Ltd won public sector contracts?
Yes. Cambrian Civil Engineering Ltd has 3 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £35K), most recently from Surrey Heath Borough Council.
What is the penalty if Cambrian Civil Engineering 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 Cambrian Civil Engineering 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.