- Companies
- Specialist contractors
- London
- Ionut Builders London Ltd
Ionut Builders London Ltd
- Company number
- 17141052
- Incorporated
- 7 Apr 2026
- Registered office
- 148 Anstridge Road, London, SE9 2LN
- Nature of business
- Other specialised construction activities n.e.c.
Ionut Builders London Ltd is a newly incorporated private limited company registered in London, company number 17141052, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 7 January 2028, and its first CT600 is due at HMRC on 6 April 2028.
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.
Is this your company?
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Where Ionut Builders London Ltd is registered
The registered office is in London (SE9), in the Greenwich local authority area, London. Show SE9 2LN on a map.
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What happens if Ionut Builders 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 7 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Jan 2028 to 7 Feb 2028 | £150 |
| 1 to 3 months late | 8 Feb 2028 to 7 Apr 2028 | £375 |
| 3 to 6 months late | 8 Apr 2028 to 7 Jul 2028 | £750 |
| More than 6 months late | From 8 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 17141052
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 April 2026
- Registered office
- 148 Anstridge Road, London, SE9 2LN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
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.
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Frequently asked questions
When are Ionut Builders London Ltd's accounts due?
Ionut Builders London Ltd's next accounts are due at Companies House by 7 January 2028 (in 451 days), covering the period to 30 April 2027.
When is Ionut Builders London Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 6 April 2027, due by 6 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ionut Builders London Ltd still trading?
Ionut Builders 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 Ionut Builders London Ltd do?
Ionut Builders London Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Ionut Builders London Ltd?
Ionut Builders London Ltd was incorporated on 7 April 2026, less than a year ago.
What is the penalty if Ionut Builders 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 Ionut Builders 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.