- Company number
- 12424788
- Incorporated
- 27 Jan 20206 years trading
- Registered office
- 17 Ellerslie Gardens, London, NW10 3TB
- Nature of business
- Construction of domestic buildings
Goldenkey Constructions London Ltd is a 6-year-old private limited company registered in London, company number 12424788, one of 12,075 building contractors in London. 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 down £100K (-100%) on the year before, to £0.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £576 against £576 owed within a year: 1.0 times cover.
- 2 employees on average, down from 4 the year before.
- Balance sheets on record for 6 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £0 | £576 | £576 | £576 | 2 |
| 31 Jan 2025 | £100K | £5,616 | £105K | 4 | |
| 31 Jan 2024 | £65K | £576 | £66K | 4 | |
| 31 Jan 2023 | £30K | £576 | £31K | 4 | |
| 31 Jan 2022 | £689 | £3,684 | £4,373 | 2 | |
| 31 Jan 2021 | £2,288 | 2 |
Who runs and owns Goldenkey Constructions London Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| M*** C*** | Director | May 2021 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| H*** C*** | Director | Mar 2020 | May 2021 |
| M*** C*** | Director | Jan 2020 | May 2020 |
Person with significant control
Where Goldenkey Constructions London Ltd is registered
The registered office is in London (NW10), in the Brent local authority area, London. Show NW10 3TB on a map.
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What happens if Goldenkey Constructions London 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
- 12424788
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 January 2020 (6 years ago)
- Registered office
- 17 Ellerslie Gardens, London, NW10 3TB
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 26 January 2026
- Previous names
- Goldenkey Contructions London Ltd (until 1 Mar 2022)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Goldline Construction Limited2022
- Goldman Construction Limited2018
- Goldmere Construction Limited2008
- Goldstone Realty Ltd2020
- Golf Burrow Productions Ltd2026
- Gomes Da Cruz Building Ltd2025
- Gonzalez Building Services Ltd2026
- Gonzo 2025 Limited2025
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Frequently asked questions
When are Goldenkey Constructions London Ltd's accounts due?
Goldenkey Constructions London 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 Goldenkey Constructions London 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 Goldenkey Constructions London Ltd still trading?
Goldenkey Constructions London 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 Goldenkey Constructions London Ltd do?
Goldenkey Constructions London Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Goldenkey Constructions London Ltd?
Goldenkey Constructions London Ltd was incorporated on 27 January 2020, 6 years ago.
Who runs Goldenkey Constructions London Ltd?
Goldenkey Constructions London Ltd has 1 active director, the longest-serving appointed in May 2021. Their names and service addresses are on the Companies House register.
Who owns Goldenkey Constructions London Ltd?
One person or company has significant control of Goldenkey Constructions London Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Goldenkey Constructions London 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 Goldenkey Constructions London 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.