- Company number
- 15069681
- Incorporated
- 14 Aug 20233 years trading
- Registered office
- 88 Ground Floor Office, Queens Road, Watford, Hertfordshire, WD17 2LA
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
CTMK Construction Ltd is a 3-year-old private limited company registered in Watford, company number 15069681, one of 365 building contractors in Watford. Its next accounts are due at Companies House on 30 May 2027, and the CT600 for the period to 30 August 2026 is due at HMRC on 30 August 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 £709 (-75.6%) on the year before, to £229.
- Current assets of £78 against £2,999 owed within a year: 0.0 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Aug 2025 | £229 | £78 | £2,999 | 1 | |
| 31 Aug 2024 | £938 | £267 | £671 | 1 |
Where CTMK Construction Ltd is registered
The registered office is in Watford (WD17), in the Watford local authority area, East of England. Show WD17 2LA on a map.
Other trade companies in WD17
- Ramauto LimitedMotor traders
- A1 Motors Watford LtdMechanics and garages
- Kola Brickwork LtdInstallers
- Appleby's Mechanical Services LtdPlumbers and heating engineers
- Kpu Services LtdProperty developers
- Highmark Investments LtdBuilders
- Boriama Private Office LimitedCleaning companies
- Oldsy Install LtdInstallers
What happens if CTMK Construction 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 30 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 May 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 30 Aug 2027 | £375 |
| 3 to 6 months late | 31 Aug 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Aug 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Aug 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
- 15069681
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 August 2023 (3 years ago)
- Registered office
- 88 Ground Floor Office, Queens Road, Watford, Hertfordshire, WD17 2LA
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 August 2025
- Last confirmation statement
- 19 September 2025
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 Watford
Other active building contractors registered in Watford.
- CVM Lifting Ltd2019
- D Property Maintenance Limited2024
- D&A Plumbing and Heating Services Limited2026
- D&D Precision Ductwork Ltd2025
- D&R Building Contractors Ltd2023
- D&R Decorating Ltd2022
- D.I.T Build Ltd2023
- Daku Solutions Ltd2025
All building contractors in Watford · All trades in Watford · Builders across the UK
Frequently asked questions
When are CTMK Construction Ltd's accounts due?
CTMK Construction Ltd's next accounts are due at Companies House by 30 May 2027 (in 230 days), covering the period to 30 August 2026.
When is CTMK Construction Ltd's CT600 due?
The CT600 for the period to 30 August 2026 is due at HMRC by 30 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 May 2027.
Is CTMK Construction Ltd still trading?
CTMK Construction Ltd is listed as active on the Companies House register (checked 12 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 CTMK Construction Ltd do?
CTMK Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is CTMK Construction Ltd?
CTMK Construction Ltd was incorporated on 14 August 2023, 3 years ago.
What is the penalty if CTMK Construction 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 CTMK Construction Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.