- Companies
- Cleaning companies
- London
- Open Sea Cleaning Ltd
Open Sea Cleaning Ltd
- Company number
- 16379767
- Incorporated
- 10 Apr 20251 year trading
- Registered office
- 69 Rounton Road, London, E3 4EY
- Nature of business
- General cleaning of buildings
Open Sea Cleaning Ltd is a 1-year-old private limited company registered in London, company number 16379767, one of 5,627 cleaning companies in London. Its next accounts are due at Companies House on 10 January 2027, and its first CT600 is due at HMRC on 9 April 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 Open Sea Cleaning Ltd is registered
The registered office is in London (E3), in the Tower Hamlets local authority area, London. Show E3 4EY on a map.
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What happens if Open Sea Cleaning 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 10 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Jan 2027 to 10 Feb 2027 | £150 |
| 1 to 3 months late | 11 Feb 2027 to 10 Apr 2027 | £375 |
| 3 to 6 months late | 11 Apr 2027 to 10 Jul 2027 | £750 |
| More than 6 months late | From 11 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 16379767
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 April 2025 (1 year ago)
- Registered office
- 69 Rounton Road, London, E3 4EY
- Nature of business
- General cleaning of buildings (SIC 81210)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 April 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.
- Optics Apex Ltd2026
- Optima Cleaning Ltd2025
- Optimal Clean Ltd2017
- Optimal Cleaning Services Limited2025
- Optimised Cleaning Solutions Ltd2026
- Optimum Edge Ltd2025
- Optimum Maxservices Limited2022
- Option Cleaning Services Ltd2025
All cleaning companies in London · All trades in London · Cleaning companies across the UK
Frequently asked questions
When are Open Sea Cleaning Ltd's accounts due?
Open Sea Cleaning Ltd's next accounts are due at Companies House by 10 January 2027 (in 89 days), covering the period to 30 April 2026.
When is Open Sea Cleaning 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 9 April 2026, due by 9 April 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Open Sea Cleaning Ltd still trading?
Open Sea Cleaning 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 Open Sea Cleaning Ltd do?
Open Sea Cleaning Ltd is registered under General cleaning of buildings (SIC 81210).
How old is Open Sea Cleaning Ltd?
Open Sea Cleaning Ltd was incorporated on 10 April 2025, 1 year ago.
What is the penalty if Open Sea Cleaning 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 Open Sea Cleaning 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.