- Companies
- Civil engineering
- Cairn Construction Ltd
Cairn Construction Ltd
- Company number
- SC744683
- Incorporated
- 16 Sep 20224 years trading
- Registered office
- Red Tree Magenta 270 Glasgow Road, Suite 1.09, Rutherglen, G73 1UZ
- Nature of business
- Construction of other civil engineering projects n.e.c.
Cairn Construction Ltd is a 4-year-old private limited company registered in Rutherglen, company number SC744683, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £688K (+173.1%) on the year before, to £1.1M.
- Current assets of £2.5M against £1.4M owed within a year: 1.7 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1.1M | £1.5M | £2.5M | £1.4M | 1 |
| 31 Jul 2024 | £397K | £913K | £1M | £746K | 1 |
| 31 Mar 2023 | £1 | £1 |
Public contracts won
Cairn Construction Ltd has 10 public sector contract awards on record, from 2023 to 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. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Scotland Excel1 award
- Aberdeenshire Council1 award
- Argyll and Bute Council1 award
- East Ayrshire Council1 award
- Stirling Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Scotland Excel | Vehicle and Plant Hire | Ceiling, not shown | 19 Aug 2026 |
| Aberdeenshire Council | Road Resurfacing and Reconstruction Framework | Ceiling, not shown | 26 Jun 2025 |
| Argyll and Bute Council | Structures Framework 2024 | Ceiling, not shown | 31 Mar 2025 |
| East Ayrshire Council | PS/24/25 4G Roads Minor Works Framework Contract | Ceiling, not shown | 27 Sep 2024 |
| Stirling Council | Roads Maintenance Framework 2024-2028 | Ceiling, not shown | 12 Aug 2024 |
| NHS Grampian | Measured Term Framework for Minor Works Projects | Ceiling, not shown | 29 Jul 2024 |
| Dumfries and Galloway Council | Roads Civil Engineering Framework | Ceiling, not shown | 8 May 2024 |
| Perth & Kinross Council | PKC11543 Amenity Greenspace Framework | Ceiling, not shown | 3 May 2024 |
| Glasgow City Council | Civils and Infrastructure Core Works Framework | Ceiling, not shown | 15 Dec 2023 |
| Scottish Borders Council | Repairs & Maintenance Framework | Ceiling, not shown | 20 Oct 2023 |
Where Cairn Construction Ltd is registered
The registered office is in Rutherglen (G73), in the South Lanarkshire local authority area, Scotland. Show G73 1UZ on a map.
Other trade companies in G73
- Ap Landscaping & Construction LtdLandscapers and gardeners
- Clark-Computing LtdRepair services
- Done & Dusted Cleaning Services (Ayrshire) LtdCleaning companies
- Studio Cooke LtdProperty developers
- Azbell Engineering and Construction LtdCivil engineering
- FM Cleaning and Maintenance Services LtdCleaning companies
- VTS (Glasgow) LtdMachinery repair and installation
- Dalmarnock Car Sales LimitedMotor traders
What happens if Cairn Construction 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC744683
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 September 2022 (4 years ago)
- Registered office
- Red Tree Magenta 270 Glasgow Road, Suite 1.09, Rutherglen, G73 1UZ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 8 September 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 Cairn Construction Ltd's accounts due?
Cairn Construction Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Cairn Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Cairn Construction Ltd still trading?
Cairn Construction 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 Cairn Construction Ltd do?
Cairn Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Cairn Construction Ltd?
Cairn Construction Ltd was incorporated on 16 September 2022, 4 years ago.
Has Cairn Construction Ltd won public sector contracts?
Yes. Cairn Construction Ltd has 10 contract awards from public bodies on Contracts Finder and Find a Tender, most recently from Scotland Excel.
What is the penalty if Cairn Construction 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 Cairn Construction 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.