- Companies
- Property developers
- Port Talbot
- Sea Grey Design Ltd
Sea Grey Design Ltd
- Company number
- 10311987
- Incorporated
- 4 Aug 201610 years trading
- Registered office
- Office 16 - Sandfields Young Business Centre, Purcell Avenue, Port Talbot, SA12 7PQ
- Nature of business
- Development of building projects; Architectural activities; specialised design activities
Sea Grey Design Ltd is a 10-year-old private limited company registered in Port Talbot, company number 10311987, one of 44 property development companies in Port Talbot. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £1,812 (+77.8%) on the year before, to £4,140.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £6,840 against £4,375 owed within a year: 1.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £4,140 | £6,840 | £4,375 | 1 | |
| 31 Mar 2025 | £2,328 | £4,619 | £3,561 | 1 | |
| 31 Mar 2024 | £5,368 | £9,077 | £4,107 | 1 | |
| 31 Aug 2023 | £9,854 | £17K | £6,394 | 1 | |
| 31 Aug 2022 | £17K | £24K | £8,007 | 1 | |
| 31 Aug 2021 | £8,797 | £18K | £4,930 | 1 | |
| 31 Aug 2020 | £3,662 | £16K | £12K | 1 | |
| 31 Aug 2019 | £3,082 | £7,371 | £10K | 1 | |
| 31 Aug 2018 | £4,103 | £4,937 | £9,551 | ||
| 31 Aug 2017 | -£2,690 | £2,561 | £2,561 | £5,932 |
Where Sea Grey Design Ltd is registered
The registered office is in Port Talbot (SA12), in the Neath Port Talbot local authority area, Wales. Show SA12 7PQ on a map.
Other trade companies in SA12
- Wearne Warmproof Specialist LimitedRoofers
- LMG Independent Bath Co LimitedElectricians
- South Wales Heritage Wood Revival LimitedPainters and decorators
- JD Industrial Services LtdCleaning companies
- Sherwood's Carpentry and Building Services LtdBuilders
- CDM Property Ventures LtdProperty developers
- Lawz Fabrications LtdMachinery repair and installation
- Smooth Operators Screeding LtdBuilders
What happens if Sea Grey Design 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 10311987
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 2016 (10 years ago)
- Registered office
- Office 16 - Sandfields Young Business Centre, Purcell Avenue, Port Talbot, SA12 7PQ
- Nature of business
- Development of building projects (SIC 41100)
Architectural activities (SIC 71111)
specialised design activities (SIC 74100) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 3 August 2025
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 Port Talbot
Other active property development companies registered in Port Talbot.
- SL Property South Wales Ltd2025
- Solutions to Structures Ltd2009
- South Wales Groundworks Limited2026
- SSH Investments Limited2012
- ST Davids Park Developments Ltd2017
- Station Road (Port Talbot) Ltd2025
- Swansea Road Limited2017
- Terrahaus Ltd2025
All property development companies in Port Talbot · All trades in Port Talbot · Property developers across the UK
Frequently asked questions
When are Sea Grey Design Ltd's accounts due?
Sea Grey Design Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Sea Grey Design Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Sea Grey Design Ltd still trading?
Sea Grey Design Ltd is listed as active on the Companies House register (checked 13 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 Sea Grey Design Ltd do?
Sea Grey Design Ltd is registered under Development of building projects (SIC 41100); Architectural activities (SIC 71111); specialised design activities (SIC 74100).
How old is Sea Grey Design Ltd?
Sea Grey Design Ltd was incorporated on 4 August 2016, 10 years ago.
What is the penalty if Sea Grey Design 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 Sea Grey Design Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.