- Companies
- Groundworks and demolition
- Luton
- Harkmac Construction Ltd
Harkmac Construction Ltd
- Company number
- 11268826
- Incorporated
- 22 Mar 20188 years trading
- Registered office
- 5 Imperial Court, Laporte Way, Luton, LU4 8FE
- Nature of business
- Site preparation
Harkmac Construction Ltd is a 8-year-old private limited company registered in Luton, company number 11268826, one of 21 groundworks and demolition companies in Luton. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £246K (+48.2%) on the year before, to £757K.
- Net assets rose in 6 of 7 year-on-year comparisons on record.
- Current assets of £5.2M against £4.5M owed within a year: 1.2 times cover.
- 12 employees on average, up from 7 the year before.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 5 Apr 2026 | £757K | £73K | £5.2M | £4.5M | 12 |
| 5 Apr 2025 | £510K | £323K | £3.9M | £3.4M | 7 |
| 31 Mar 2024 | £1.3M | £129K | £4.2M | £2.9M | 6 |
| 31 Mar 2023 | £821K | £305 | £3.2M | £2.4M | 5 |
| 31 Mar 2022 | £360K | £80K | £1.9M | £1.6M | 4 |
| 31 Mar 2021 | £240K | £47K | £586K | £374K | 4 |
| 31 Mar 2020 | £190K | £178K | £297K | £114K | 4 |
| 31 Mar 2019 | £113K | £2,403 | £156K | £44K | 4 |
Who runs and owns Harkmac Construction Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| F*** H*** | Director | Mar 2018 |
| D*** M*** | Director | Mar 2018 |
People with significant control (2)
Charges (secured borrowing)
3 of 3 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Lloyds Bank PLC | Outstanding | Jan 2026 |
| Lloyds Bank PLC | Outstanding | Sep 2024 |
| Lloyds Bank PLC | Outstanding | Sep 2024 |
Where Harkmac Construction Ltd is registered
The registered office is in Luton (LU4), in the Luton local authority area, East of England. Show LU4 8FE on a map.
Other trade companies in LU4
- Kai Properties LtdProperty developers
- Surrey Design and Build LtdRoofers
- Lignora LtdFloor and wall tilers
- MK Services Pro LtdProperty developers
- Amp Vision Solutions LtdElectricians
- S R Auto Motors LimitedMotor traders
- Arseley Motor Group LtdMotor traders
- F Martini Building & Roofing LtdBuilders
Shared registered office
39 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Harkmac 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 11268826
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 March 2018 (8 years ago)
- Registered office
- 5 Imperial Court, Laporte Way, Luton, LU4 8FE
- Nature of business
- Site preparation (SIC 43120)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 5 April 2026
- Last confirmation statement
- 21 March 2026
- Charges (mortgages)
- 3 outstanding of 3 registered
Filing notes for groundworks and demolition companies
Groundworks and demolition companies tend to own heavy plant, so capital allowances and hire purchase liabilities show up in both the accounts and the CT600.
Similar companies in Luton
Other active groundworks and demolition companies registered in Luton.
- Lbuk Group Limited2024
- M S Construction (Luton) Ltd2020
- Make More Space Construction Ltd2016
- Matoshi Excavations Ltd2026
- Mitu Carpentry&Joinery Ltd2016
- Pro Excavations Limited2024
- R-Stavo UK Ltd2016
- Rolfe & Sons Group Ltd2026
All groundworks and demolition companies in Luton · All trades in Luton · Groundworks and demolition across the UK
Frequently asked questions
When are Harkmac Construction Ltd's accounts due?
Harkmac Construction Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Harkmac Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Harkmac Construction Ltd still trading?
Harkmac 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 Harkmac Construction Ltd do?
Harkmac Construction Ltd is registered under Site preparation (SIC 43120).
How old is Harkmac Construction Ltd?
Harkmac Construction Ltd was incorporated on 22 March 2018, 8 years ago.
Who runs Harkmac Construction Ltd?
Harkmac Construction Ltd has 2 active directors, the longest-serving appointed in Mar 2018. Their names and service addresses are on the Companies House register.
Who owns Harkmac Construction Ltd?
2 people or companies have significant control of Harkmac Construction Ltd: an individual (can appoint and remove directors); an individual (can appoint and remove directors).
What is the penalty if Harkmac 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 Harkmac 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.