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- Colmack Engineering Ltd.
Company profile · Civil engineering
Colmack Engineering Ltd.
Colmack Engineering Ltd. is a 18-year-old private limited company registered in Paisley, company number SC344129, one of 16 civil engineering contractors in Paisley. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 June 2025, as filed at Companies House.
Colmack Engineering Ltd. over the years
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 £9,401 (-3.6%) on the year before, to £249K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £249K | £139K | £110K | 1 | |
| 30 Jun 2024 | £258K | £146K | £112K | 1 | |
| 30 Jun 2023 | £262K | £169K | £93K | 1 | |
| 30 Jun 2022 | £278K | £187K | £187K | £90K | 1 |
| 30 Jun 2021 | £315K | £251K | £253K | £62K | 1 |
| 30 Jun 2020 | £296K | £323K | £340K | £45K | 1 |
| 30 Jun 2019 | £282K | £267K | £319K | £38K | 1 |
| 30 Jun 2018 | £302K | £329K | £377K | £76K | 1 |
| 30 Jun 2017 | £363K | £414K | £77K | ||
| 30 Jun 2016 | £348K | £410K | £405K | £56K |
Who runs and owns Colmack Engineering Ltd.
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| C*** M*** | Director | Jun 2008 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| Brian Reid Ltd. | Secretary (company) | Jun 2008 | Jun 2008 |
| Nicolson Secretarial Services Ltd | Secretary (company) | May 2011 | Jul 2019 |
| Stephen Mabbott Ltd. | Director (company) | Jun 2008 | Jun 2008 |
Person with significant control
Where Colmack Engineering Ltd. is registered
The registered office is in Paisley (PA2), in the Renfrewshire local authority area, Scotland. Show PA2 6AJ on a map.
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What happens if Colmack 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- SC344129
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 June 2008 (18 years ago)
- Registered office
- 12/1 Bungalow Main Road Castlehead, Paisley, Glasgow, PA2 6AJ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 10 June 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 Paisley
Other active civil engineering contractors registered in Paisley.
- Flobob Haulage Ltd2025
- Leegal Contracts Limited2005
- Lodam Limited2019
- Pinpoint Site Services Ltd2010
- Probe Civil Engineering Ltd2026
- RRS Group Holdinds Ltd2025
- RRTS Group Holdings Ltd2025
- Strathclyde Group Limited2016
All civil engineering contractors in Paisley · All trades in Paisley · Civil engineering across the UK
Frequently asked questions
When are Colmack Engineering Ltd.'s accounts due?
Colmack Engineering Ltd.'s next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Colmack Engineering Ltd.'s CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Colmack Engineering Ltd. still trading?
Colmack 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 Colmack Engineering Ltd. do?
Colmack Engineering Ltd. is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Colmack Engineering Ltd.?
Colmack Engineering Ltd. was incorporated on 10 June 2008, 18 years ago.
Who runs Colmack Engineering Ltd.?
Colmack Engineering Ltd. has 1 active director, the longest-serving appointed in Jun 2008. Their names and service addresses are on the Companies House register.
Who owns Colmack Engineering Ltd.?
One person or company has significant control of Colmack Engineering Ltd.: an individual (owns 75% or more of the shares).
What is the penalty if Colmack 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 Colmack 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.