- Companies
- Plumbers and heating engineers
- Dungannon
- SMG Mechanical Ltd
SMG Mechanical Ltd
- Company number
- NI731994
- Incorporated
- 4 Aug 20251 year trading
- Registered office
- 152 Coalisland Road, Dungannon, BT71 6LB
- Nature of business
- Plumbing, heat and air-conditioning installation
SMG Mechanical Ltd is a 1-year-old private limited company registered in Dungannon, company number NI731994, one of 30 plumbing and heating companies in Dungannon. Its next accounts are due at Companies House on 4 May 2027, and its first CT600 is due at HMRC on 3 August 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where SMG Mechanical Ltd is registered
The registered office is in Dungannon (BT71), in the Mid Ulster local authority area, Northern Ireland. Show BT71 6LB on a map.
Other trade companies in BT71
- Fab Blast NI LtdSpecialist contractors
- Coleman Surfacing LtdCivil engineering
- GLS Contracts LtdBuilders
- JP Cleaning Specialists LtdRoofers
- Roadline Automotive LtdMotor traders
- Glasstech Windscreens Irl LtdMechanics and garages
- CT Vehicle Services LtdMechanics and garages
- House of Automotive LtdMotor traders
What happens if SMG Mechanical 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 4 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 May 2027 to 4 Jun 2027 | £150 |
| 1 to 3 months late | 5 Jun 2027 to 4 Aug 2027 | £375 |
| 3 to 6 months late | 5 Aug 2027 to 4 Nov 2027 | £750 |
| More than 6 months late | From 5 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- NI731994
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 2025 (1 year ago)
- Registered office
- 152 Coalisland Road, Dungannon, BT71 6LB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Dungannon
Other active plumbing and heating companies registered in Dungannon.
- Sydney Brown & Son Ltd2003
- Synk Bathrooms Ltd2023
- Taq Mechanical Ltd2024
- Amc365 Ltd2025
- Big Bear Stoves Ltd2025
- BJ McGrath Mechanical Ltd2019
- BM Plumbing Limited2025
- CCP Mechanical Ltd2025
All plumbing and heating companies in Dungannon · All trades in Dungannon · Plumbers and heating engineers across the UK
Frequently asked questions
When are SMG Mechanical Ltd's accounts due?
SMG Mechanical Ltd's next accounts are due at Companies House by 4 May 2027 (in 203 days), covering the period to 31 August 2026.
When is SMG Mechanical Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 3 August 2026, due by 3 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SMG Mechanical Ltd still trading?
SMG Mechanical Ltd is listed as active on the Companies House register (checked 13 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 SMG Mechanical Ltd do?
SMG Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is SMG Mechanical Ltd?
SMG Mechanical Ltd was incorporated on 4 August 2025, 1 year ago.
What is the penalty if SMG Mechanical 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 SMG Mechanical Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.