- Companies
- Civil engineering
- Omagh
- Atmac Construction Ltd
Atmac Construction Ltd
- Company number
- NI639253
- Incorporated
- 21 Jun 201610 years trading
- Registered office
- 38 Roscavey Road, Beragh, Omagh, Tyrone, BT79 0QH
- Nature of business
- Construction of roads and motorways; Construction of other civil engineering projects n.e.c.; Demolition
Atmac Construction Ltd is a 10-year-old private limited company registered in Omagh, company number NI639253, one of 71 civil engineering contractors in Omagh. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Public contracts won
Atmac Construction Ltd has one public sector contract award on record (2024). Source: Contracts Finder and Find a Tender award notices. For all 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.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Fermanagh and Omagh District Council | Tender for the Procurement of Contractor Frameworks (3 Lots) | Ceiling, not shown | 6 Feb 2024 |
Where Atmac Construction Ltd is registered
The registered office is in Omagh (BT79), in the Fermanagh and Omagh local authority area, Northern Ireland. Show BT79 0QH on a map.
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What happens if Atmac Construction 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- NI639253
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 June 2016 (10 years ago)
- Registered office
- 38 Roscavey Road, Beragh, Omagh, Tyrone, BT79 0QH
- Nature of business
- Construction of roads and motorways (SIC 42110)
Construction of other civil engineering projects n.e.c. (SIC 42990)
Demolition (SIC 43110) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 12 December 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- Atmac Civils Ltd (until 7 Dec 2016)
Atmax Civils Ltd (until 6 Jul 2016)
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 Omagh
Other active civil engineering contractors registered in Omagh.
- Bamac Services Ltd2018
- BD Earthworks Ltd2018
- BD Plant Hire & Sales Ltd2016
- Blair Jones Ltd2026
- BML Contracts (N.I.) Ltd2017
- Calbro Construction (NI) Ltd2005
- Carland Contracts Ltd2020
- Civil Utilities Construction Ltd2026
All civil engineering contractors in Omagh · All trades in Omagh · Civil engineering across the UK
Frequently asked questions
When are Atmac Construction Ltd's accounts due?
Atmac Construction Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Atmac Construction Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Atmac Construction Ltd still trading?
Atmac Construction 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 Atmac Construction Ltd do?
Atmac Construction Ltd is registered under Construction of roads and motorways (SIC 42110); Construction of other civil engineering projects n.e.c. (SIC 42990); Demolition (SIC 43110).
How old is Atmac Construction Ltd?
Atmac Construction Ltd was incorporated on 21 June 2016, 10 years ago.
Has Atmac Construction Ltd won public sector contracts?
Yes. Atmac Construction Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from FERMANAGH AND OMAGH DISTRICT COUNCIL.
What is the penalty if Atmac Construction 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 Atmac Construction 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.