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- DWJ Harkin Ltd
Company profile · Civil engineering
DWJ Harkin Ltd
DWJ Harkin Ltd is a 40-year-old private limited company registered in Birmingham, company number 02003357, one of 278 civil engineering contractors in Birmingham. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
DWJ Harkin Ltd over the years
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 £476K (-22.4%) on the year before, to £1.6M.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £2.7M against £1.6M owed within a year: 1.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Oct 2025 | £1.6M | £264K | £2.7M | £1.6M | 0 |
| 31 Oct 2024 | £2.1M | £1.5M | £3.4M | £1.8M | 12 |
| 31 Oct 2023 | £1.6M | £623K | £2.3M | £1.1M | 12 |
| 31 Oct 2022 | £2M | £1.1M | £2.7M | £879K | 11 |
| 31 Oct 2021 | £1.5M | £287K | £2.3M | £830K | 10 |
| 31 Oct 2020 | £1.4M | £564K | £1.9M | £689K | 8 |
| 31 Oct 2019 | £1.3M | £822K | £2M | £968K | 8 |
| 31 Oct 2018 | £1.1M | £982K | £2.3M | £1.4M | |
| 31 Oct 2017 | £966K | £591K | £1.5M | £784K | |
| 31 Oct 2016 | £714K | £291K | £1.4M | £938K |
Where DWJ Harkin Ltd is registered
The registered office is in Birmingham (B11), in the Birmingham local authority area, West Midlands. Show B11 1NU on a map.
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What happens if DWJ Harkin 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 02003357
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 March 1986 (40 years ago)
- Registered office
- 1A Abbotsford Road, Sparkhill, Birmingham, West Midlands, B11 1NU
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 29 December 2025
- Previous names
- Harkin Formwork Limited (until 30 Oct 2014)
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 Birmingham
Other active civil engineering contractors registered in Birmingham.
- E & D Motor Rewinds Ltd2026
- Eks Ground Solutions Limited2026
- Electrofibre (Efibre) Limited2024
- Els Trading Limited2015
- Engineering Design Services Limited2016
- Ere Teaching Limited2015
- Erik Trans Limited2021
- Erris Builders Limited1973
All civil engineering contractors in Birmingham · All trades in Birmingham · Civil engineering across the UK
Frequently asked questions
When are DWJ Harkin Ltd's accounts due?
DWJ Harkin Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is DWJ Harkin Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is DWJ Harkin Ltd still trading?
DWJ Harkin 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 DWJ Harkin Ltd do?
DWJ Harkin Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is DWJ Harkin Ltd?
DWJ Harkin Ltd was incorporated on 24 March 1986, 40 years ago.
What is the penalty if DWJ Harkin 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 DWJ Harkin 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.