- Company number
- 16829908
- Incorporated
- 4 Nov 2025
- Registered office
- Suite 806 Crown House, North Circular Road, London, NW10 7PN
- Nature of business
- Construction of domestic buildings; Other construction installation
Irongate Construction Limited is a newly incorporated private limited company registered in London, company number 16829908, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 4 August 2027, and its first CT600 is due at HMRC on 3 November 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Irongate Construction Limited is registered
The registered office is in London (NW10), in the Ealing local authority area, London. Show NW10 7PN on a map.
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Also registered at this address
1 other company uses the same registered office as Irongate Construction Limited.
- Autovertex LtdMotor traders
What happens if Irongate 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 4 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Aug 2027 to 4 Sep 2027 | £150 |
| 1 to 3 months late | 5 Sep 2027 to 4 Nov 2027 | £375 |
| 3 to 6 months late | 5 Nov 2027 to 4 Feb 2028 | £750 |
| More than 6 months late | From 5 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 16829908
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 November 2025
- Registered office
- Suite 806 Crown House, North Circular Road, London, NW10 7PN
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other construction installation (SIC 43290) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
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.
- Ironpeak Builders Limited2025
- Ironside & Malone Design & Build 2 Limited2014
- Ironteam Construction Ltd2024
- Ironwood Services Ltd2025
- Irreda Plastering Limited2025
- Iruci Construction Ltd2023
- Is Construction and Maintenance Services Ltd2026
- Isaneza Builds Limited2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Irongate Construction Limited's accounts due?
Irongate Construction Limited's next accounts are due at Companies House by 4 August 2027 (in 295 days), covering the period to 30 November 2026.
When is Irongate Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 3 November 2026, due by 3 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Irongate Construction Limited still trading?
Irongate 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 Irongate Construction Limited do?
Irongate Construction Limited is registered under Construction of domestic buildings (SIC 41202); Other construction installation (SIC 43290).
How old is Irongate Construction Limited?
Irongate Construction Limited was incorporated on 4 November 2025, less than a year ago.
What is the penalty if Irongate 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 Irongate 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.