- Companies
- Specialist contractors
- London
- Promethean Construction Limited
Promethean Construction Limited
- Company number
- 14987432
- Incorporated
- 7 Jul 20233 years trading
- Registered office
- Harwood House, 43 Harwood Road, London, SW6 4QP
- Nature of business
- Other specialised construction activities n.e.c.; Other business support service activities n.e.c.
Promethean Construction Limited is a 3-year-old private limited company registered in London, company number 14987432, one of 4,318 specialist construction companies in London. 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 down £234 (-5.3%) on the year before, to £4,161.
- Current assets of £679K against £684K owed within a year: 1.0 times cover.
- 2 employees 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £4,161 | £112K | £679K | £684K | 2 |
| 31 Mar 2024 | £4,395 | £65K | £139K | £135K | 2 |
Public contracts won
Promethean Construction Limited has one public sector contract award on record (2025). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Quality Trusted Solutions | QTS Estates Maintenance Services Framework | Ceiling, not shown | 24 Dec 2025 |
Where Promethean Construction Limited is registered
The registered office is in London (SW6), in the Hammersmith and Fulham local authority area, London. Show SW6 4QP on a map.
Other trade companies in SW6
- MW Imports LimitedMotor traders
- Euroconsturction LimitedBuilders
- Basileus 17 Construction LtdBuilders
- Earthcom LtdBuilders
- Siren Plates LimitedMotor traders
- Catteau Cosntruction LtdInstallers
- R&L Building Projects LtdBuilders
- Fulham Palace Properties LimitedProperty developers
Also registered at this address
10 other companies use the same registered office as Promethean Construction Limited.
- 565 Kingston LimitedProperty developers
- Aasa & Partners LimitedProperty developers
- D N A Auto Technical Services LtdMechanics and garages
- Designhaus (London) LimitedFinishing trades
- London Vectis LimitedProperty developers
- London View LimitedProperty developers
- Magenta Developments LimitedProperty developers
- Old Park Construction LimitedFinishing trades
- Pascal Huser Design & Build LimitedBuilders
- Vista Investment Projects LimitedProperty developers
What happens if Promethean Construction Limited 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
- 14987432
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 July 2023 (3 years ago)
- Registered office
- Harwood House, 43 Harwood Road, London, SW6 4QP
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 13 July 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Prometheus Planning & Investment Ltd2026
- Prominvest Development Ltd2011
- Promised Land Energy Services Ltd2023
- Prop'd Up Limited2026
- Propajob Ltd2026
- Propave and Landscape Ltd2026
- Propcare Solutions Ltd2025
- Proper Property Solutions Ltd2026
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Promethean Construction Limited's accounts due?
Promethean Construction Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Promethean Construction Limited'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 Promethean Construction Limited still trading?
Promethean Construction Limited 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 Promethean Construction Limited do?
Promethean Construction Limited is registered under Other specialised construction activities n.e.c. (SIC 43999); Other business support service activities n.e.c. (SIC 82990).
How old is Promethean Construction Limited?
Promethean Construction Limited was incorporated on 7 July 2023, 3 years ago.
Has Promethean Construction Limited won public sector contracts?
Yes. Promethean Construction Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Quality Trusted Solutions.
What is the penalty if Promethean Construction Limited 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 Promethean Construction Limited 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.