Company profile · Builders
Aucu Limited
Aucu Limited is a 2-year-old private limited company registered in London, company number 15597075, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 13 March 2027, and the CT600 for the period to 13 June 2026 is due at HMRC on 13 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 13 June 2025, as filed at Companies House.
Aucu Limited over the years
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 £500 (-83.3%) on the year before, to £100.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2025 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 13 Jun 2025 | £100 | £100 | 1 | ||
| 31 Mar 2025 | £600 | £100 | £0 | 1 |
Where Aucu Limited is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 5EP on a map.
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What happens if Aucu 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 13 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Mar 2027 to 13 Apr 2027 | £150 |
| 1 to 3 months late | 14 Apr 2027 to 13 Jun 2027 | £375 |
| 3 to 6 months late | 14 Jun 2027 to 13 Sep 2027 | £750 |
| More than 6 months late | From 14 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 14 Jun 2027 | £200 |
| 3 months late | 13 Sep 2027 | another £200 |
| 6 months late | 13 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 13 Jun 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
- 15597075
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 March 2024 (2 years ago)
- Registered office
- Flat 102 Buckland Court, ST. John's Estate, London, N1 5EP
- Nature of business
- Construction of domestic buildings (SIC 41202)
specialised design activities (SIC 74100)
Artistic creation (SIC 90030) - Year end
- 13 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 13 June 2025
- Last confirmation statement
- 19 March 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.
- Audition Limited2021
- Audley Builders Ltd2025
- Augusta Building Ltd2024
- Aurel Amarandei Ltd2026
- Aurel.D Ltd2020
- Aurel.M Construction Ltd2020
- Aureon Construction Ltd2026
- Aurevo Construction Ltd2025
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Frequently asked questions
When are Aucu Limited's accounts due?
Aucu Limited's next accounts are due at Companies House by 13 March 2027 (in 152 days), covering the period to 13 June 2026.
When is Aucu Limited's CT600 due?
The CT600 for the period to 13 June 2026 is due at HMRC by 13 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 14 March 2027.
Is Aucu Limited still trading?
Aucu 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 Aucu Limited do?
Aucu Limited is registered under Construction of domestic buildings (SIC 41202); specialised design activities (SIC 74100); Artistic creation (SIC 90030).
How old is Aucu Limited?
Aucu Limited was incorporated on 27 March 2024, 2 years ago.
What is the penalty if Aucu 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 Aucu 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.