- Companies
- Specialist contractors
- Windsor
- Mmi Group Holdings Ltd
Mmi Group Holdings Ltd
- Company number
- 14703628
- Incorporated
- 3 Mar 20233 years trading
- Registered office
- 13 Vansittart Estate, Windsor, Berkshire, SL4 1SE
- Nature of business
- Other specialised construction activities n.e.c.
Mmi Group Holdings Ltd is a 3-year-old private limited company registered in Windsor, company number 14703628, one of 24 specialist construction companies in Windsor. 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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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 up £438K on the year before, to £438K.
- Current assets of £24K against £5,315 owed within a year: 4.6 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £438K | £23K | £24K | £5,315 | 3 |
| 31 Mar 2024 | £100 | 3 |
Where Mmi Group Holdings Ltd is registered
The registered office is in Windsor (SL4), in the Windsor and Maidenhead local authority area, South East. Show SL4 1SE on a map.
Other trade companies in SL4
- A3 Hand Car Wash and Valeting Center LimitedCleaning companies
- Time Watch Repair Watford LtdRepair services
- Mobile Tyre Services 24/7 LtdMechanics and garages
- Hullscrub Thames LtdCleaning companies
- Black Rose Automotive Group LtdMotor traders
- Maldec Hatchet Farm LimitedProperty developers
- Pinehill Homes Partnerships LtdProperty developers
- Heatsense Renewables LtdElectricians
Also registered at this address
22 other companies use the same registered office as Mmi Group Holdings Ltd.
- Avanza Flooring Company LtdFloor and wall tilers
- Bradbury Surfacing Civils LimitedCivil engineering
- Care Free Flooring LtdInstallers
- CG Gorilla Roofing LimitedRoofers
- Custom Rooflights LimitedGlaziers
- Domus Capital Developments LimitedProperty developers
- DRW Office Interiors LimitedSpecialist contractors
- Everrati Advanced Technologies LtdMotor traders
- Everrati Assets LimitedMotor traders
- Everrati Automotive LimitedMotor traders
- Faiden Construction LtdPlumbers and heating engineers
- Gant Property Maintenance LtdFinishing trades
- Home Guard 365 LtdMachinery repair and installation
- KG Gardens LtdLandscapers and gardeners
- Killoran Agriworks LtdSpecialist contractors
- London Roof Gardens LimitedSpecialist contractors
- Manning Building & Developments LimitedBuilders
- Mmi Construction LimitedSpecialist contractors
- PJM Autos LtdMechanics and garages
- SJR Plumbing + Heating LimitedPlumbers and heating engineers
- Southern Motorhome Centre LtdMotor traders
- Stafford Developments LimitedProperty developers
What happens if Mmi Group Holdings 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 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
- 14703628
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 2023 (3 years ago)
- Registered office
- 13 Vansittart Estate, Windsor, Berkshire, SL4 1SE
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 March 2026
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 Windsor
Other active specialist construction companies registered in Windsor.
- NJM (UK) Limited1998
- Online Construction Consultants Ltd2025
- Optima Interiors Ltd2013
- Set and Shoot Productions Ltd2022
- Structural Repair Solutions Ltd2019
- T Track Ltd2025
- Alexandros Group Limited2018
- Asbestos 2Go Limited2012
All specialist construction companies in Windsor · All trades in Windsor · Specialist contractors across the UK
Frequently asked questions
When are Mmi Group Holdings Ltd's accounts due?
Mmi Group Holdings Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Mmi Group Holdings Ltd'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 Mmi Group Holdings Ltd still trading?
Mmi Group Holdings 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 Mmi Group Holdings Ltd do?
Mmi Group Holdings Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mmi Group Holdings Ltd?
Mmi Group Holdings Ltd was incorporated on 3 March 2023, 3 years ago.
What is the penalty if Mmi Group Holdings 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 Mmi Group Holdings 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.