- Companies
- Civil engineering
- Bangor
- McCollum Engineering Ltd
McCollum Engineering Ltd
- Company number
- 13599101
- Incorporated
- 2 Sep 20215 years trading
- Registered office
- Unit F1 Intec, Parc Menai, Bangor, Gwynedd, LL57 4FG
- Nature of business
- Construction of other civil engineering projects n.e.c.
McCollum Engineering Ltd is a 5-year-old private limited company registered in Bangor, company number 13599101, one of 17 civil engineering contractors in Bangor. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £3,313 (+11.9%) on the year before, to £31K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £52K against £31K owed within a year: 1.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £31K | £52K | £31K | 0 | |
| 30 Sep 2024 | £28K | £34K | £21K | 0 | |
| 30 Sep 2023 | £16K | £21K | £12K | 0 | |
| 30 Sep 2022 | £15K | £25K | £12K | 0 |
Who runs and owns McCollum Engineering Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| S*** M*** | Director | Sep 2021 |
| C*** W*** | Director | Apr 2025 |
Person with significant control
Where McCollum Engineering Ltd is registered
The registered office is in Bangor (LL57), in the Gwynedd local authority area, Wales. Show LL57 4FG on a map.
Other trade companies in LL57
- Purple Plumbers LimitedPlumbers and heating engineers
- E.R.A Humphreys LimitedCivil engineering
- Morris&Owens LimitedPlasterers
- North Coast Carpentry and Construction LimitedJoiners and carpenters
- P M Williams & Son LtdBuilders
- K Gorilla Cars LtdMotor traders
- Gwynedd Scaffolding LimitedScaffolders
- J&G Building and Assembling LtdBuilders
What happens if McCollum 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 13599101
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 September 2021 (5 years ago)
- Registered office
- Unit F1 Intec, Parc Menai, Bangor, Gwynedd, LL57 4FG
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 12 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 in Bangor
Other active civil engineering contractors registered in Bangor.
- Menai Construction Limited2006
- Phantom Communications Ltd2021
- R P O Williams Civil Engineers Limited2005
- T T Roberts & Son Ltd2003
- Vaynol Contractors Consortium Ltd2001
- Versine Engineering Limited2014
- Wyn Hughes Civils Limited2022
- Alan Murphy Consulting Ltd2014
All civil engineering contractors in Bangor · All trades in Bangor · Civil engineering across the UK
Frequently asked questions
When are McCollum Engineering Ltd's accounts due?
McCollum Engineering Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is McCollum Engineering Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is McCollum Engineering Ltd still trading?
McCollum 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 McCollum Engineering Ltd do?
McCollum Engineering Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is McCollum Engineering Ltd?
McCollum Engineering Ltd was incorporated on 2 September 2021, 5 years ago.
Who runs McCollum Engineering Ltd?
McCollum Engineering Ltd has 2 active directors, the longest-serving appointed in Sep 2021. Their names and service addresses are on the Companies House register.
Who owns McCollum Engineering Ltd?
One person or company has significant control of McCollum Engineering Ltd: an individual (owns 75% or more of the shares).
What is the penalty if McCollum 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 McCollum 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.