- Company number
- 04924623
- Incorporated
- 7 Oct 200323 years trading
- Registered office
- 5 Ffordd Cynan, Bangor, Gwynedd, LL57 2NR
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Maclennan Construction Limited is a 23-year-old private limited company registered in Bangor, company number 04924623, one of 75 building contractors in Bangor. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 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 £1,965 (+0.8%) on the year before, to £244K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £389K against £186K owed within a year: 2.1 times cover.
- 2 employees on average, up from -3 the year before.
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Mar 2025 | £244K | £109K | £389K | £186K | 2 |
| 30 Mar 2024 | £242K | £80K | £543K | £320K | -3 |
| 30 Mar 2023 | £217K | £98K | £378K | £207K | -3 |
| 30 Mar 2022 | £199K | £420K | £203K | 4 | |
| 30 Mar 2021 | £124K | £283K | £135K | 6 | |
| 30 Mar 2020 | £106K | £133K | £326K | £254K | 4 |
| 30 Mar 2019 | £107K | £6,949 | £222K | £147K | 3 |
| 5 Apr 2018 | £104K | £6,916 | £366K | £56K | 4 |
| 30 Mar 2018 | £104K | £23 | £359K | £49K | 4 |
| 5 Apr 2017 | £71K | £8,541 | £407K | £129K | 4 |
Public contracts won
Maclennan Construction Limited has 2 public sector contract awards on record; the ones with their own published value total £643K (2021). Source: Contracts Finder and Find a Tender award notices. For 1 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
- Adra1 award
- Grwp Llandrillo Menai1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Adra | Construction of 4 Semi-detached bungalows at Glan Menai, Bangor | £643K | 21 Oct 2021 |
| Grwp Llandrillo Menai | Building Construction Framework Agreement 2021 | Ceiling, not shown | 16 Mar 2021 |
Where Maclennan Construction Limited is registered
The registered office is in Bangor (LL57), in the Gwynedd local authority area, Wales. Show LL57 2NR 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 Maclennan Construction Limited 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 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 | 31 Mar 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 | 30 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
- 04924623
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2003 (23 years ago)
- Registered office
- 5 Ffordd Cynan, Bangor, Gwynedd, LL57 2NR
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 March 2025
- Last confirmation statement
- 10 October 2025
- Charges (mortgages)
- 1 outstanding of 3 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Bangor
Other active building contractors registered in Bangor.
- McAlorum Construction Limited2010
- ML Hughes Construction Ltd2018
- MMM Design & Build Limited1982
- Nickell & Richmond Ltd2015
- P Banham Building Contractor Ltd.2007
- P M Williams & Son Ltd2026
- PH Brickwork and Groundworks Limited2023
- Portsandel Limited2004
All building contractors in Bangor · All trades in Bangor · Builders across the UK
Frequently asked questions
When are Maclennan Construction Limited's accounts due?
Maclennan Construction Limited's next accounts are due at Companies House by 30 December 2026 (in 79 days), covering the period to 30 March 2026.
When is Maclennan Construction Limited's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Maclennan Construction Limited still trading?
Maclennan Construction Limited 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 Maclennan Construction Limited do?
Maclennan Construction Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Maclennan Construction Limited?
Maclennan Construction Limited was incorporated on 7 October 2003, 23 years ago.
Has Maclennan Construction Limited won public sector contracts?
Yes. Maclennan Construction Limited has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £643K), most recently from Adra.
What is the penalty if Maclennan Construction Limited 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 Maclennan Construction Limited 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.