- Companies
- Builders
- Portsmouth
- C.D.M Contractors Ltd
C.D.M Contractors Ltd
- Company number
- 06752146
- Incorporated
- 18 Nov 200817 years trading
- Registered office
- Unit 14 Fairway Business Centre, Airport Service Road, Portsmouth, PO3 5NU
- Nature of business
- Construction of commercial buildings
C.D.M Contractors Ltd is a 17-year-old private limited company registered in Portsmouth, company number 06752146, one of 175 building contractors in Portsmouth. 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 down £75K (-6.3%) on the year before, to £1.1M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £1.9M against £851K owed within a year: 2.2 times cover.
- 9 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1.1M | £743K | £1.9M | £851K | 9 |
| 31 Mar 2024 | £1.2M | £851K | £2M | £909K | 9 |
| 31 Mar 2023 | £957K | £763K | £1.4M | £488K | 12 |
| 31 Mar 2022 | £764K | £369K | £1.2M | £545K | 8 |
| 31 Mar 2021 | £928K | £320K | £2.3M | £963K | 5 |
| 31 Mar 2020 | £572K | £103K | £1.5M | £757K | 5 |
| 31 Mar 2019 | £505K | £94K | £1.5M | £695K | |
| 31 Mar 2018 | £237K | £48K | £1.3M | £628K | |
| 31 Mar 2017 | £351K | £76K | £1.2M | £589K | |
| 31 Mar 2016 | £293K | £182K | £787K | £498K |
Public contracts won
C.D.M Contractors Ltd has 2 public sector contract awards on record; the ones with their own published value total £83K, from 2024 to 2025. Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Vivid1 award
- Adur District Council & Worthing Borough Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Vivid | VIVID Howard Road Sheds Refurbishment | £12K | 28 Aug 2025 |
| Adur District Council & Worthing Borough Council | GB-Worthing: EKA231207 - Commerce Way, Lancing (Male Showers) | £71K | 17 Jun 2024 |
Where C.D.M Contractors Ltd is registered
The registered office is in Portsmouth (PO3), in the Portsmouth local authority area, South East. Show PO3 5NU on a map.
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- Portsmouth Autos LtdMechanics and garages
- Henley Roofing Group LimitedInstallers
- I’M Covered 365 Ac LtdPlumbers and heating engineers
- Scope Bodyshop LtdMechanics and garages
- GP Technical LtdSpecialist contractors
What happens if C.D.M Contractors 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
- 06752146
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 November 2008 (17 years ago)
- Registered office
- Unit 14 Fairway Business Centre, Airport Service Road, Portsmouth, PO3 5NU
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 17 November 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- M. Legg Construction UK Ltd (until 21 Oct 2009)
Harman Construction UK Ltd (until 4 Jul 2009)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Portsmouth
Other active building contractors registered in Portsmouth.
- C45 Commercial Properties Limited2024
- Casa 4 Developments Ltd2025
- Chalkstone Projects Ltd2026
- Clameg Design and Build Ltd2010
- Cleall Builders Limited2003
- Club Commerce Architecture Ltd2020
- Complete Facades Installations Limited2020
- Complete Facades Limited2010
All building contractors in Portsmouth · All trades in Portsmouth · Builders across the UK
Frequently asked questions
When are C.D.M Contractors Ltd's accounts due?
C.D.M Contractors 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 C.D.M Contractors 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 C.D.M Contractors Ltd still trading?
C.D.M Contractors 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 C.D.M Contractors Ltd do?
C.D.M Contractors Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is C.D.M Contractors Ltd?
C.D.M Contractors Ltd was incorporated on 18 November 2008, 17 years ago.
Has C.D.M Contractors Ltd won public sector contracts?
Yes. C.D.M Contractors Ltd has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £83K), most recently from VIVID.
What is the penalty if C.D.M Contractors 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 C.D.M Contractors 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.