- Companies
- Civil engineering
- Blackwood
- Dark & Hillman Construction Ltd
Dark & Hillman Construction Ltd
- Company number
- 04737437
- Incorporated
- 16 Apr 200323 years trading
- Registered office
- 4 Pen Y Cwarel, Wyllie, Blackwood, Gwent, NP12 2HP
- Nature of business
- Construction of other civil engineering projects n.e.c.
Dark & Hillman Construction Ltd is a 23-year-old private limited company registered in Blackwood, company number 04737437, one of 8 civil engineering contractors in Blackwood. Its next accounts are due at Companies House on 28 May 2027, and the CT600 for the period to 28 August 2026 is due at HMRC on 28 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 £58K (-271.6%) on the year before, to -£37K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £314K against £127K owed within a year: 2.5 times cover.
- 4 employees on average, down from 7 the year before.
- 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 Aug 2025 | -£37K | £314K | £127K | 4 | |
| 31 Aug 2024 | £21K | £204K | £174K | 7 | |
| 31 Aug 2023 | £96K | £262K | £148K | 8 | |
| 31 Aug 2022 | £112K | £291K | £151K | 8 | |
| 31 Aug 2021 | £101K | £444K | £211K | 7 | |
| 31 Aug 2020 | £12K | £487K | £160K | 6 | |
| 31 Aug 2019 | £12K | £326K | £147K | 7 | |
| 31 Aug 2018 | £18K | £392K | £110K | 9 | |
| 31 Aug 2017 | £13K | £71K | £383K | £109K | |
| 31 Aug 2016 | £1,440 | £22K | £469K |
Where Dark & Hillman Construction Ltd is registered
The registered office is in Blackwood (NP12), in the Caerphilly local authority area, Wales. Show NP12 2HP on a map.
Other trade companies in NP12
- Hohm Property Group LtdProperty developers
- R&C Mechanics LimitedMechanics and garages
- M & R Property Solutions (SW) LimitedFinishing trades
- JLH Scaffolding LtdScaffolders
- SM Contracting SW LtdBuilders
- Top Notch Carpentry Services LimitedInstallers
- Cardiff Bathrooms LtdFinishing trades
- CB Brickwork & Building LtdSpecialist contractors
What happens if Dark & Hillman 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 28 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 May 2027 to 28 Jun 2027 | £150 |
| 1 to 3 months late | 29 Jun 2027 to 28 Aug 2027 | £375 |
| 3 to 6 months late | 29 Aug 2027 to 28 Nov 2027 | £750 |
| More than 6 months late | From 29 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Aug 2027 | £200 |
| 3 months late | 28 Nov 2027 | another £200 |
| 6 months late | 28 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 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
- 04737437
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 April 2003 (23 years ago)
- Registered office
- 4 Pen Y Cwarel, Wyllie, Blackwood, Gwent, NP12 2HP
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 28 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 16 April 2026
- Charges (mortgages)
- 3 outstanding of 6 registered
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Blackwood
Other active civil engineering contractors registered in Blackwood.
- Elite Jointing Solutions Limited2024
- John Dunn Brickwork Contractors Ltd2009
- LCS Engineering Ltd2009
- LV Plant Ltd2026
- Railzone Ltd2025
- Trydan Rail Ltd2023
- D & M Groundworks & Utilities Ltd2017
All civil engineering contractors in Blackwood · All trades in Blackwood · Civil engineering across the UK
Frequently asked questions
When are Dark & Hillman Construction Ltd's accounts due?
Dark & Hillman Construction Ltd's next accounts are due at Companies House by 28 May 2027 (in 227 days), covering the period to 28 August 2026.
When is Dark & Hillman Construction Ltd's CT600 due?
The CT600 for the period to 28 August 2026 is due at HMRC by 28 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 May 2027.
Is Dark & Hillman Construction Ltd still trading?
Dark & Hillman Construction 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 Dark & Hillman Construction Ltd do?
Dark & Hillman Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Dark & Hillman Construction Ltd?
Dark & Hillman Construction Ltd was incorporated on 16 April 2003, 23 years ago.
What is the penalty if Dark & Hillman 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 Dark & Hillman Construction 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.