- Companies
- Plumbers and heating engineers
- Watford
- CDP Mechanical Contracting Ltd
CDP Mechanical Contracting Ltd
- Company number
- 17446117
- Incorporated
- 8 Sep 2026
- Registered office
- 23 Kensington Avenue, Watford, WD18 7RZ
- Nature of business
- Plumbing, heat and air-conditioning installation
CDP Mechanical Contracting Ltd is a newly incorporated private limited company registered in Watford, company number 17446117, one of 124 plumbing and heating companies in Watford. Its next accounts are due at Companies House on 8 June 2028, and its first CT600 is due at HMRC on 7 September 2028.
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 CDP Mechanical Contracting Ltd is registered
The registered office is in Watford (WD18), in the Watford local authority area, East of England. Show WD18 7RZ on a map.
Other trade companies in WD18
- Aston Contractors LimitedInstallers
- Basky 613 LtdProperty developers
- M&E Motors LtdMotor traders
- Jeservicesgroup LtdBuilders
- RCK’S Car Wash Ltd LtdMechanics and garages
- S Buildx LtdBuilders
- Lane Commercial LtdCivil engineering
- Atherstone Air Conditioning LimitedPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as CDP Mechanical Contracting Ltd.
- DPH Mechanical LtdPlumbers and heating engineers
What happens if CDP Mechanical Contracting 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 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 9 Jun 2028 to 8 Jul 2028 | £150 |
| 1 to 3 months late | 9 Jul 2028 to 8 Sep 2028 | £375 |
| 3 to 6 months late | 9 Sep 2028 to 8 Dec 2028 | £750 |
| More than 6 months late | From 9 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2029 | 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
- 17446117
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 September 2026
- Registered office
- 23 Kensington Avenue, Watford, WD18 7RZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (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 Watford
Other active plumbing and heating companies registered in Watford.
- Charlie Pay Plumbing Services Ltd2019
- City Water Solutions Ltd2020
- Coldquest Ltd2026
- Compson19 Ltd2017
- CPB Gas Ltd2023
- D and J K Plumbing & Heating Ltd2021
- DBS Controls Limited2015
- DJML Heating Limited2016
All plumbing and heating companies in Watford · All trades in Watford · Plumbers and heating engineers across the UK
Frequently asked questions
When are CDP Mechanical Contracting Ltd's accounts due?
CDP Mechanical Contracting Ltd's next accounts are due at Companies House by 8 June 2028 (in 605 days), covering the period to 30 September 2027.
When is CDP Mechanical Contracting 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 September 2027, due by 7 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is CDP Mechanical Contracting Ltd still trading?
CDP Mechanical Contracting 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 CDP Mechanical Contracting Ltd do?
CDP Mechanical Contracting Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is CDP Mechanical Contracting Ltd?
CDP Mechanical Contracting Ltd was incorporated on 8 September 2026, less than a year ago.
What is the penalty if CDP Mechanical Contracting 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 CDP Mechanical Contracting 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.