- Companies
- Cleaning companies
- London
- Nanodefence London Limited
Nanodefence London Limited
- Company number
- 12903410
- Incorporated
- 24 Sep 20206 years trading
- Registered office
- Flat 6F Hyde Park Mansions, Cabbell Street, London, NW1 5BJ
- Nature of business
- General cleaning of buildings
Nanodefence London Limited is a 6-year-old private limited company registered in London, company number 12903410, one of 5,627 cleaning companies in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £34K (-82.7%) on the year before, to £7,069.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £4,830 against £18K owed within a year: 0.3 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £7,069 | £4,830 | £18K | 3 | |
| 30 Sep 2024 | £41K | £666 | £50K | 3 | |
| 30 Sep 2023 | £38K | £1,173 | £49K | 4 | |
| 30 Sep 2022 | £12K | £2,956 | £28K | 5 | |
| 30 Sep 2021 | £840 | £12K | £11K | 2 |
Where Nanodefence London Limited is registered
The registered office is in London (NW1), in the Westminster local authority area, London. Show NW1 5BJ on a map.
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What happens if Nanodefence London 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 12903410
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 September 2020 (6 years ago)
- Registered office
- Flat 6F Hyde Park Mansions, Cabbell Street, London, NW1 5BJ
- Nature of business
- General cleaning of buildings (SIC 81210)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 21 July 2026
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in London
Other active cleaning companies registered in London.
- Naranjos Team Cleaning Ltd2018
- Narsd Limited2026
- Nas Cleaning Ltd2026
- National Hospital Vehicle Sanitation (NHVS) Ltd2026
- Nationalw Cleaning Ltd2026
- Nativeshine Ltd2025
- Naturally Neat Ltd2023
- Nature Property Services Ltd2023
All cleaning companies in London · All trades in London · Cleaning companies across the UK
Frequently asked questions
When are Nanodefence London Limited's accounts due?
Nanodefence London Limited's next accounts are due at Companies House by 31 May 2027 (in 229 days), covering the period to 31 August 2026.
When is Nanodefence London Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Nanodefence London Limited still trading?
Nanodefence London 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 Nanodefence London Limited do?
Nanodefence London Limited is registered under General cleaning of buildings (SIC 81210).
How old is Nanodefence London Limited?
Nanodefence London Limited was incorporated on 24 September 2020, 6 years ago.
What is the penalty if Nanodefence London 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 Nanodefence London 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.