- Companies
- Installers
- Port Talbot
- D&M Wolmark Building Contractors Ltd
D&M Wolmark Building Contractors Ltd
- Company number
- 10583582
- Incorporated
- 25 Jan 20179 years trading
- Registered office
- 1A Cefn Coed Road, Cwmavon, Port Talbot, SA12 9LP
- Nature of business
- Other construction installation; Other specialised construction activities n.e.c.
D&M Wolmark Building Contractors Ltd is a 9-year-old private limited company registered in Port Talbot, company number 10583582, one of 25 installation companies (insulation, lifts, shutters and similar) in Port Talbot. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £17K (+101.9%) on the year before, to £33K.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £41K against £8,642 owed within a year: 4.8 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £33K | £41K | £8,642 | 1 | |
| 31 Jan 2024 | £16K | £23K | £7,128 | 1 | |
| 31 Jan 2023 | £1,880 | £2,827 | £947 | 1 | |
| 31 Jan 2022 | £100 | £100 | |||
| 31 Jan 2021 | £100 | £100 | |||
| 31 Jan 2020 | £100 | £100 | |||
| 31 Jan 2019 | £100 | £100 | |||
| 31 Jan 2018 | £1,563 | £2,161 | £598 |
Where D&M Wolmark Building Contractors Ltd is registered
The registered office is in Port Talbot (SA12), in the Neath Port Talbot local authority area, Wales. Show SA12 9LP on a map.
Other trade companies in SA12
- Wearne Warmproof Specialist LimitedRoofers
- LMG Independent Bath Co LimitedElectricians
- South Wales Heritage Wood Revival LimitedPainters and decorators
- JD Industrial Services LtdCleaning companies
- Sherwood's Carpentry and Building Services LtdBuilders
- CDM Property Ventures LtdProperty developers
- Lawz Fabrications LtdMachinery repair and installation
- Smooth Operators Screeding LtdBuilders
What happens if D&M Wolmark Building 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 10583582
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 January 2017 (9 years ago)
- Registered office
- 1A Cefn Coed Road, Cwmavon, Port Talbot, SA12 9LP
- Nature of business
- Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 29 September 2025
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Port Talbot
Other active installation companies (insulation, lifts, shutters and similar) registered in Port Talbot.
- Danny West Tiling Limited2016
- F.C.A Contractors Ltd2017
- G Hopkins Installations Ltd2017
- Hughes Decorative Groundwork’S Ltd2025
- Kal Loft Conversion Ltd2024
- Llederw Ltd2016
- LMG Home Improvements Limited2016
- T & T Contractors (Wales) Ltd2018
All installation companies (insulation, lifts, shutters and similar) in Port Talbot · All trades in Port Talbot · Installers across the UK
Frequently asked questions
When are D&M Wolmark Building Contractors Ltd's accounts due?
D&M Wolmark Building Contractors Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is D&M Wolmark Building Contractors Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is D&M Wolmark Building Contractors Ltd still trading?
D&M Wolmark Building 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 D&M Wolmark Building Contractors Ltd do?
D&M Wolmark Building Contractors Ltd is registered under Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999).
How old is D&M Wolmark Building Contractors Ltd?
D&M Wolmark Building Contractors Ltd was incorporated on 25 January 2017, 9 years ago.
What is the penalty if D&M Wolmark Building 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 D&M Wolmark Building 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.