Mu-4 Ltd
- Company number
- NI655741
- Incorporated
- 17 Sep 20188 years trading
- Registered office
- 7 Tobermore Business Centre Desertmartin Road, Tobermore, Magherafelt, BT45 5SG
- Nature of business
- Maintenance and repair of motor vehicles; Retail trade of motor vehicle parts and accessories; Management consultancy activities other than financial management
Mu-4 Ltd is a 8-year-old private limited company registered in Magherafelt, company number NI655741, one of 10 vehicle repair garages in Magherafelt. Companies House shows its accounts as overdue: they were due on 30 September 2026.
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 £17K (-24.8%) on the year before, to £53K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £36K against £31K owed within a year: 1.1 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2024 | £53K | £36K | £31K | 2 | |
| 30 Sep 2023 | £70K | £50K | £26K | 1 | |
| 30 Sep 2022 | £77K | £58K | £25K | 1 | |
| 30 Sep 2021 | £66K | £66K | £30K | 1 | |
| 30 Sep 2020 | £55K | £75K | £51K | 1 | |
| 30 Sep 2019 | £15K | £41K | £56K | 1 |
Where Mu-4 Ltd is registered
The registered office is in Magherafelt (BT45), in the Mid Ulster local authority area, Northern Ireland. Show BT45 5SG on a map.
Other trade companies in BT45
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- Tonagh Construction Services LtdSpecialist contractors
- Es Brickwork LtdSpecialist contractors
- CSS Ireland LtdSpecialist contractors
- 825 Contracts LtdBuilders
- Vind Services LtdMachinery repair and installation
- Braidwater (Strategic Land) LimitedProperty developers
What happens if Mu-4 Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- NI655741
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 September 2018 (8 years ago)
- Registered office
- 7 Tobermore Business Centre Desertmartin Road, Tobermore, Magherafelt, BT45 5SG
- Nature of business
- Maintenance and repair of motor vehicles (SIC 45200)
Retail trade of motor vehicle parts and accessories (SIC 45320)
Management consultancy activities other than financial management (SIC 70229) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2024
- Last confirmation statement
- 16 September 2025
Filing notes for vehicle repair garages
Garages hold parts stock and often own diagnostic equipment and ramps, which qualify for capital allowances.
Similar companies in Magherafelt
Other active vehicle repair garages registered in Magherafelt.
- Russell Shiels Tyres Ltd2006
- Sean Lee Motors Ltd2019
- Wraphub-NI Limited2023
- Ams (Advanced Motor Solutions) Ltd2025
- CH-Cha Ltd2026
- Dmac Truck & Trailer Repair Ltd2021
- Enkalon Accident Repair Centre Ltd2024
- Gordon Bell & Son Ltd2021
All vehicle repair garages in Magherafelt · All trades in Magherafelt · Mechanics and garages across the UK
Frequently asked questions
When are Mu-4 Ltd's accounts due?
Mu-4 Ltd's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Mu-4 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 30 September 2025, due by 30 September 2026, and one for the period to 31 December 2025, due by 31 December 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mu-4 Ltd still trading?
Mu-4 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 Mu-4 Ltd do?
Mu-4 Ltd is registered under Maintenance and repair of motor vehicles (SIC 45200); Retail trade of motor vehicle parts and accessories (SIC 45320); Management consultancy activities other than financial management (SIC 70229).
How old is Mu-4 Ltd?
Mu-4 Ltd was incorporated on 17 September 2018, 8 years ago.
What is the penalty if Mu-4 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 Mu-4 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.