- Companies
- Civil engineering
- Coleraine
- Port Constructions Limited
Port Constructions Limited
- Company number
- NI633937
- Incorporated
- 30 Sep 201511 years trading
- Registered office
- 32 Lodge Road, Coleraine, BT52 1NB
- Nature of business
- Construction of bridges and tunnels
Port Constructions Limited is a 11-year-old private limited company registered in Coleraine, company number NI633937, one of 12 civil engineering contractors in Coleraine. 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 down £128K (-21.8%) on the year before, to £458K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £459K against £4,780 owed within a year: more than 10 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £458K | £80K | £459K | £4,780 | 0 |
| 31 Mar 2024 | £586K | £381K | £623K | £44K | 10 |
| 31 Mar 2023 | £722K | £251K | £777K | £66K | 11 |
| 31 Mar 2022 | £584K | £178K | £701K | £121K | 13 |
| 31 Mar 2021 | £522K | £393K | £900K | £382K | 15 |
| 26 Mar 2020 | £216K | £90K | £414K | £204K | 9 |
| 26 Mar 2019 | £243K | £29K | £322K | £107K | |
| 26 Mar 2018 | £214K | £42K | £317K | £143K | |
| 28 Mar 2017 | £134K | £735K | £636K | ||
| 29 Mar 2016 | £9,281 | £46K | £44K |
Where Port Constructions Limited is registered
The registered office is in Coleraine (BT52), in the Causeway Coast and Glens local authority area, Northern Ireland. Show BT52 1NB on a map.
Other trade companies in BT52
- CBMS LimitedFacilities management
- Old Market Vans (Coleraine) LtdMotor traders
- Epj Developments LtdProperty developers
- Cbin Developments LimitedProperty developers
- Kian Construction Group LtdSpecialist contractors
- Royeir LtdSpecialist contractors
- Gowiththeflowbathrooms LtdInstallers
- Causeway Pest Control LtdCleaning companies
Also registered at this address
5 other companies use the same registered office as Port Constructions Limited.
- Augustus Property Management LimitedProperty developers
- Energy Acquisitions Group LimitedCivil engineering
- K A Magherafelt LimitedProperty developers
- Walworth BK LimitedBuilders
What happens if Port Constructions 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 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
- NI633937
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 September 2015 (11 years ago)
- Registered office
- 32 Lodge Road, Coleraine, BT52 1NB
- Nature of business
- Construction of bridges and tunnels (SIC 42130)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 23 August 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 Coleraine
Other active civil engineering contractors registered in Coleraine.
- Studio Rogers Limited2000
- Aoc Contracts (N.I.) Ltd2016
- Boylan Contracts Ltd2026
- Brockaghbuoy Civil Engineering Ltd2020
- Deh Plant Hire Ltd2001
- Easycharge (NI) Limited2023
- Energy Acquisitions Group Limited2019
- McBride Contracts Ltd2007
All civil engineering contractors in Coleraine · All trades in Coleraine · Civil engineering across the UK
Frequently asked questions
When are Port Constructions Limited's accounts due?
Port Constructions Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Port Constructions Limited'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 Port Constructions Limited still trading?
Port Constructions 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 Port Constructions Limited do?
Port Constructions Limited is registered under Construction of bridges and tunnels (SIC 42130).
How old is Port Constructions Limited?
Port Constructions Limited was incorporated on 30 September 2015, 11 years ago.
What is the penalty if Port Constructions 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 Port Constructions 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.