- Companies
- Specialist contractors
- Newtownabbey
- McMullan Bros Ltd
McMullan Bros Ltd
- Company number
- NI731226
- Incorporated
- 8 Jul 20251 year trading
- Registered office
- 39 Hillview Avenue, Newtownabbey, BT36 6AF
- Nature of business
- Other specialised construction activities n.e.c.
McMullan Bros Ltd is a 1-year-old private limited company registered in Newtownabbey, company number NI731226, one of 12 specialist construction companies in Newtownabbey. Its next accounts are due at Companies House on 8 April 2027, and its first CT600 is due at HMRC on 7 July 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 McMullan Bros Ltd is registered
The registered office is in Newtownabbey (BT36), in the Antrim and Newtownabbey local authority area, Northern Ireland. Show BT36 6AF on a map.
Other trade companies in BT36
- C2 Repairs LtdGlaziers
- BNB Electrical LimitedElectricians
- NI.Consultancy2026 LtdSpecialist contractors
- B2 Property Group LtdFinishing trades
- Colin McGlinchey LtdMachinery repair and installation
- Mac’S Maintenance LtdFinishing trades
- Glaze and Frame Direct LtdGlaziers
- JH Site Maintenance LtdFacilities management
What happens if McMullan Bros 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 8 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 9 Apr 2027 to 8 May 2027 | £150 |
| 1 to 3 months late | 9 May 2027 to 8 Jul 2027 | £375 |
| 3 to 6 months late | 9 Jul 2027 to 8 Oct 2027 | £750 |
| More than 6 months late | From 9 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- NI731226
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 July 2025 (1 year ago)
- Registered office
- 39 Hillview Avenue, Newtownabbey, BT36 6AF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Newtownabbey
Other active specialist construction companies registered in Newtownabbey.
- NI.Consultancy2026 Ltd2026
- Norglen Development Limited2026
- Pe3 Pipeline Services Limited2009
- Road Plant Ltd2024
- Abbey Repointing Ltd2026
- Advanced Timber Craft (NI) Ltd2002
- B Creighton Contractors Limited2019
- BVJV Limited2013
All specialist construction companies in Newtownabbey · All trades in Newtownabbey · Specialist contractors across the UK
Frequently asked questions
When are McMullan Bros Ltd's accounts due?
McMullan Bros Ltd's next accounts are due at Companies House by 8 April 2027 (in 177 days), covering the period to 31 July 2026.
When is McMullan Bros 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 7 July 2026, due by 7 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is McMullan Bros Ltd still trading?
McMullan Bros 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 McMullan Bros Ltd do?
McMullan Bros Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is McMullan Bros Ltd?
McMullan Bros Ltd was incorporated on 8 July 2025, 1 year ago.
What is the penalty if McMullan Bros 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 McMullan Bros 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.