- Companies
- Specialist contractors
- Hamilton
- Calmac Contracts Ltd
Calmac Contracts Ltd
- Company number
- SC638699
- Incorporated
- 13 Aug 20197 years trading
- Registered office
- 4D Auchingramont Road, Hamilton, ML3 6JT
- Nature of business
- Other specialised construction activities n.e.c.
Calmac Contracts Ltd is a 7-year-old private limited company registered in Hamilton, company number SC638699, one of 64 specialist construction companies in Hamilton. 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 down £4,872 on the year before, to -£4,407.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £7,399 against £8,282 owed within a year: 0.9 times cover.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 5 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | -£4,407 | £7,120 | £7,399 | £8,282 | 1 |
| 31 Aug 2023 | £465 | £4,935 | £7,847 | £3,271 | 0 |
| 31 Aug 2022 | £465 | £4,935 | £7,847 | £3,271 | 0 |
| 31 Aug 2021 | -£6,117 | £4,003 | £4,003 | £5,532 | 1 |
| 31 Aug 2020 | -£1,599 | £4,543 | £6,194 | £12K | 1 |
Where Calmac Contracts Ltd is registered
The registered office is in Hamilton (ML3), in the South Lanarkshire local authority area, Scotland. Show ML3 6JT on a map.
Other trade companies in ML3
- Horizon Joinery LtdJoiners and carpenters
- Grime Fighters Banbury LtdCleaning companies
- SM Energy Services LtdMachinery repair and installation
- Exceptional Distribution Services LtdRepair services
- Damp Solve LtdInstallers
- Ffcontracts LtdElectricians
- Rammz Paving LtdSpecialist contractors
- DLT Thistle Property Group LtdProperty developers
Shared registered office
73 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 Calmac Contracts 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
- SC638699
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 August 2019 (7 years ago)
- Registered office
- 4D Auchingramont Road, Hamilton, ML3 6JT
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 12 August 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Hamilton
Other active specialist construction companies registered in Hamilton.
- Central Scotland Maintenance Ltd2011
- Chisholm Marine Commissioning Ltd2019
- Delmark Ltd2020
- Diamond Cleaning Services (Lanarkshire) Ltd2013
- Electrace Heating Ltd2021
- Evolution Offshore Access Solutions Ltd2025
- Food Process Engineering Limited1984
- Garrion Maintenance Limited2015
All specialist construction companies in Hamilton · All trades in Hamilton · Specialist contractors across the UK
Frequently asked questions
When are Calmac Contracts Ltd's accounts due?
Calmac Contracts Ltd's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Calmac Contracts 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 Calmac Contracts Ltd still trading?
Calmac Contracts Ltd is listed as active on the Companies House register (checked 12 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 Calmac Contracts Ltd do?
Calmac Contracts Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Calmac Contracts Ltd?
Calmac Contracts Ltd was incorporated on 13 August 2019, 7 years ago.
What is the penalty if Calmac Contracts 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 Calmac Contracts Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.