- Companies
- Plumbers and heating engineers
- London
- CDM Mechanical Ltd
CDM Mechanical Ltd
- Company number
- 16807823
- Incorporated
- 24 Oct 2025
- Registered office
- Unimix House, Platinum Suite, Abbey Road, London, NW10 7TR
- Nature of business
- Plumbing, heat and air-conditioning installation
CDM Mechanical Ltd is a newly incorporated private limited company registered in London, company number 16807823, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 24 July 2027, and its first CT600 is due at HMRC on 23 October 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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Who runs and owns CDM Mechanical Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| C*** M*** | Director | Oct 2025 |
Person with significant control
Where CDM Mechanical Ltd is registered
The registered office is in London (NW10), in the Brent local authority area, London. Show NW10 7TR on a map.
Other trade companies in NW10
- Smart Roof Group LtdRoofers
- Mah Maintenance London LimitedFinishing trades
- 46 Electrical LtdElectricians
- Ahf Construction LtdBuilders
- Hook and Hoist LtdMachinery repair and installation
- Wrights Building Services LtdFinishing trades
- Abx Autos LtdMotor traders
- Ev & Plug-in Centre LtdMechanics and garages
Also registered at this address
9 other companies use the same registered office as CDM Mechanical Ltd.
- Cusp Management LimitedGroundworks and demolition
- Dynamic Services London LimitedProperty developers
- Easypick Repairs and Servicing LtdMechanics and garages
- Electrilink LtdElectricians
- Safe Scaffolding Access LimitedBuilders
- Scaffoldworks Kent LtdSpecialist contractors
- Scaffoldworks LtdScaffolders
- Sterling Crown Properties LtdElectricians
- Unique Platinum Services LimitedMechanics and garages
What happens if CDM 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 24 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 25 Jul 2027 to 24 Aug 2027 | £150 |
| 1 to 3 months late | 25 Aug 2027 to 24 Oct 2027 | £375 |
| 3 to 6 months late | 25 Oct 2027 to 24 Jan 2028 | £750 |
| More than 6 months late | From 25 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16807823
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 October 2025
- Registered office
- Unimix House, Platinum Suite, Abbey Road, London, NW10 7TR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (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 London
Other active plumbing and heating companies registered in London.
- Cea Plumbing & Heating Ltd2024
- Cel Plumbing and Heating Ltd2025
- Celsius Gas Services Ltd2019
- Celsius Gas Solutions Limited2018
- Cena Plumbing and Heating Limited2017
- Cercel Ltd2012
- Certigas Ltd2020
- CF Building and Plumbing Ltd2020
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are CDM Mechanical Ltd's accounts due?
CDM Mechanical Ltd's next accounts are due at Companies House by 24 July 2027 (in 284 days), covering the period to 31 October 2026.
When is CDM 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 23 October 2026, due by 23 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is CDM Mechanical Ltd still trading?
CDM Mechanical 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 CDM Mechanical Ltd do?
CDM Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is CDM Mechanical Ltd?
CDM Mechanical Ltd was incorporated on 24 October 2025, less than a year ago.
Who runs CDM Mechanical Ltd?
CDM Mechanical Ltd has 1 active director, the longest-serving appointed in Oct 2025. Their names and service addresses are on the Companies House register.
Who owns CDM Mechanical Ltd?
One person or company has significant control of CDM Mechanical Ltd: an individual (owns 75% or more of the shares).
What is the penalty if CDM 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 CDM Mechanical 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.