- Company number
- 12182011
- Incorporated
- 30 Aug 20197 years trading
- Registered office
- 73 Castlecombe Road, London, SE9 4AU
- Nature of business
- Construction of domestic buildings
Nairo Limited is a 7-year-old private limited company registered in London, company number 12182011, one of 12,075 building contractors in London. Companies House shows its accounts as overdue: they were due on 30 September 2026.
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 £214K (+158%) on the year before, to £78K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £78K | £0 | £30K | 0 | |
| 31 Dec 2023 | -£135K | £14K | £17K | 0 | |
| 31 Dec 2022 | -£116K | £10K | £14K | ||
| 31 Dec 2021 | £19K | £9,024 | £11K | 1 | |
| 31 Aug 2020 | -£2,968 | £12K | 0 |
Where Nairo Limited is registered
The registered office is in London (SE9), in the Bromley local authority area, London. Show SE9 4AU on a map.
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What happens if Nairo Limited files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- 12182011
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 August 2019 (7 years ago)
- Registered office
- 73 Castlecombe Road, London, SE9 4AU
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 26 August 2026
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.
- Nali Construction Ltd2021
- Namaste Constructions Ltd2025
- Nana Frimpong Contruction Ltd2026
- Nando Plastering Ltd2021
- Nani Builders (UK) Limited2021
- Narch Construction Ltd2023
- Narch Limited2019
- Narendra Kumar Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Nairo Limited's accounts due?
Nairo Limited's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Nairo Limited's CT600 due?
The CT600 for the period to 31 December 2025 is due at HMRC by 31 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2026.
Is Nairo Limited still trading?
Nairo Limited is listed as active on the Companies House register (checked 12 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 Nairo Limited do?
Nairo Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Nairo Limited?
Nairo Limited was incorporated on 30 August 2019, 7 years ago.
What is the penalty if Nairo 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 Nairo Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.