- Companies
- Property developers
- Shanklin
- Open Sea Developments Limited
Open Sea Developments Limited
- Company number
- 12605096
- Incorporated
- 15 May 20206 years trading
- Registered office
- ST Anthonys Convent, Beatrice Avenue, Shanklin, Isle Of Wight, PO37 6EN
- Nature of business
- Development of building projects
Open Sea Developments Limited is a 6-year-old private limited company registered in Shanklin, company number 12605096, one of 7 property development companies in Shanklin. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 unchanged on the year before, at £1.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £966K against £951K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Mar 2025 | £1 | £966K | £951K | 0 | |
| 31 Mar 2024 | £1 | £966K | £948K | 0 | |
| 31 Mar 2023 | £1 | £966K | £943K | 0 | |
| 31 Mar 2022 | £1 | £843K | £811K | 0 | |
| 31 Mar 2021 | £1 | £800K | £800K | 0 |
Where Open Sea Developments Limited is registered
The registered office is in Shanklin (PO37), in the Isle of Wight local authority area, South East. Show PO37 6EN on a map.
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Also registered at this address
3 other companies use the same registered office as Open Sea Developments Limited.
- Halliday Assets LtdProperty developers
- Heartwood Developments (I.O.W.) LtdProperty developers
- Heartwood Homes (Isle of Wight) LimitedBuilders
What happens if Open Sea Developments 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 12605096
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 May 2020 (6 years ago)
- Registered office
- ST Anthonys Convent, Beatrice Avenue, Shanklin, Isle Of Wight, PO37 6EN
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 May 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Shanklin
Other active property development companies registered in Shanklin.
- Scovell Properties Limited2009
- Solent Homes (Iw) Limited2017
- Taylors of Wight Ltd2025
- Crown Development & Property Limited2025
- Halliday Assets Ltd2010
- Heartwood Developments (I.O.W.) Ltd2015
All property development companies in Shanklin · All trades in Shanklin · Property developers across the UK
Frequently asked questions
When are Open Sea Developments Limited's accounts due?
Open Sea Developments Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Open Sea Developments Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Open Sea Developments Limited still trading?
Open Sea Developments 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 Open Sea Developments Limited do?
Open Sea Developments Limited is registered under Development of building projects (SIC 41100).
How old is Open Sea Developments Limited?
Open Sea Developments Limited was incorporated on 15 May 2020, 6 years ago.
What is the penalty if Open Sea Developments 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 Open Sea Developments 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.