- Companies
- Specialist contractors
- Portishead
- Seahorse Construction Ltd
Seahorse Construction Ltd
- Company number
- 12950553
- Incorporated
- 14 Oct 20205 years trading
- Registered office
- 47 Kingfisher Road, Portishead, Somerset, BS20 7NF
- Nature of business
- Other specialised construction activities n.e.c.
Seahorse Construction Ltd is a 5-year-old private limited company registered in Portishead, company number 12950553, one of 15 specialist construction companies in Portishead. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £2,146 on the year before, to -£2,037.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £561 against £2,444 owed within a year: 0.2 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 Oct 2025 | -£2,037 | £561 | £2,444 | 0 | |
| 31 Oct 2024 | £109 | £4,542 | £2,597 | 1 | |
| 31 Oct 2023 | £7,892 | £21K | £14K | 1 | |
| 31 Oct 2022 | £19K | £43K | £16K | 0 | |
| 31 Oct 2021 | £7,637 | £69K | £165K | 0 |
Where Seahorse Construction Ltd is registered
The registered office is in Portishead (BS20), in the North Somerset local authority area, South West. Show BS20 7NF on a map.
Other trade companies in BS20
- B & B Project Developments LimitedProperty developers
- 2A Walton Road LtdBuilders
- Voisey Construction & Landscaping LtdBuilders
- Pristine Renovations Bristol LtdFinishing trades
- Platform Tyres LtdMotor traders
- Upkeep Exterior Cleaning LtdCleaning companies
- Challenger Sash Windows LtdFinishing trades
- Soh Building and Maintenance LtdFacilities management
What happens if Seahorse Construction 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 12950553
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 October 2020 (5 years ago)
- Registered office
- 47 Kingfisher Road, Portishead, Somerset, BS20 7NF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 13 October 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Portishead
Other active specialist construction companies registered in Portishead.
- Signature Construction (SW) Ltd2024
- Stephen Tiltman Ltd2017
- The Somerset Sash Window Company Ltd2010
- WSL Welding Ltd2026
- D & R Energy Ltd2022
- Future Mastics Limited1997
- Future Rail Services Limited2009
- J&L Construction Services Bristol Limited2014
All specialist construction companies in Portishead · All trades in Portishead · Specialist contractors across the UK
Frequently asked questions
When are Seahorse Construction Ltd's accounts due?
Seahorse Construction Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Seahorse Construction Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Seahorse Construction Ltd still trading?
Seahorse Construction 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 Seahorse Construction Ltd do?
Seahorse Construction Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Seahorse Construction Ltd?
Seahorse Construction Ltd was incorporated on 14 October 2020, 5 years ago.
What is the penalty if Seahorse Construction 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 Seahorse Construction 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.