- Companies
- Civil engineering
- Belfast
- Opus Engineering Ire Limited
Opus Engineering Ire Limited
- Company number
- NI651926
- Incorporated
- 26 Mar 20188 years trading
- Registered office
- 76 Mount Merrion Park, Belfast, Down, BT6 0GB
- Nature of business
- Construction of other civil engineering projects n.e.c.
Opus Engineering Ire Limited is a 8-year-old private limited company registered in Belfast, company number NI651926, one of 67 civil engineering contractors in Belfast. 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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Where Opus Engineering Ire Limited is registered
The registered office is in Belfast (BT6), in the Belfast local authority area, Northern Ireland. Show BT6 0GB on a map.
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What happens if Opus Engineering Ire 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
- NI651926
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 March 2018 (8 years ago)
- Registered office
- 76 Mount Merrion Park, Belfast, Down, BT6 0GB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 25 March 2026
- Previous names
- Opus Engineering Limited (until 14 Oct 2025)
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 Belfast
Other active civil engineering contractors registered in Belfast.
- Orchard Renewables Ltd2024
- Pad Projects (N.I.) Limited2025
- PBC Contracts Ltd2025
- Phi (N.I.) Limited2009
- PJC Energy Solutions Ltd2018
- Poweroptix Limited2023
- Professional Rail Solutions Ltd2022
- Proplan Europe Limited2015
All civil engineering contractors in Belfast · All trades in Belfast · Civil engineering across the UK
Frequently asked questions
When are Opus Engineering Ire Limited's accounts due?
Opus Engineering Ire Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Opus Engineering Ire 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 Opus Engineering Ire Limited still trading?
Opus Engineering Ire 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 Opus Engineering Ire Limited do?
Opus Engineering Ire Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Opus Engineering Ire Limited?
Opus Engineering Ire Limited was incorporated on 26 March 2018, 8 years ago.
What is the penalty if Opus Engineering Ire 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 Opus Engineering Ire 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.