- Companies
- Property developers
- Leeds
- Seacon Environment Ltd
Seacon Environment Ltd
- Company number
- 06806658
- Incorporated
- 2 Feb 200917 years trading
- Registered office
- 31 Knostrop Quay, Hunslet, Leeds, West Yorkshire, LS10 1GG
- Nature of business
- Development of building projects; Environmental consulting activities
Seacon Environment Ltd is a 17-year-old private limited company registered in Leeds, company number 06806658, one of 831 property development companies in Leeds. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 up £33K (+215.8%) on the year before, to £49K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £113K against £45K owed within a year: 2.5 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £49K | £113K | £45K | 2 | |
| 29 Feb 2024 | £15K | £84K | £49K | 1 | |
| 28 Feb 2023 | £1,585 | £42K | £39K | 1 | |
| 28 Feb 2022 | £25K | £63K | £36K | 0 | |
| 28 Feb 2021 | £29K | £77K | £47K | 1 | |
| 29 Feb 2020 | £1,654 | £40K | £33K | 1 | |
| 28 Feb 2019 | £1,295 | £32K | £24K | ||
| 28 Feb 2018 | £1,329 | £38K | £32K | ||
| 28 Feb 2017 | £440 | £27K | £23K | ||
| 28 Feb 2016 | £22K | £15K |
Where Seacon Environment Ltd is registered
The registered office is in Leeds (LS10), in the Leeds local authority area, Yorkshire and The Humber. Show LS10 1GG on a map.
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What happens if Seacon Environment 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 06806658
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 February 2009 (17 years ago)
- Registered office
- 31 Knostrop Quay, Hunslet, Leeds, West Yorkshire, LS10 1GG
- Nature of business
- Development of building projects (SIC 41100)
Environmental consulting activities (SIC 74901) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 2 February 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 Leeds
Other active property development companies registered in Leeds.
- Secure Buildings Ltd2025
- Seeds Property Ltd2020
- Sensia Torsion Care Homes Limited2026
- Sensia Torsion Devco Limited2026
- Serenegrade Limited1978
- Seven Crystal Limited2023
- SF Harker Builder and Developer Ltd2014
- Shaam Property Group Ltd2025
All property development companies in Leeds · All trades in Leeds · Property developers across the UK
Frequently asked questions
When are Seacon Environment Ltd's accounts due?
Seacon Environment Ltd's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is Seacon Environment Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Seacon Environment Ltd still trading?
Seacon Environment 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 Seacon Environment Ltd do?
Seacon Environment Ltd is registered under Development of building projects (SIC 41100); Environmental consulting activities (SIC 74901).
How old is Seacon Environment Ltd?
Seacon Environment Ltd was incorporated on 2 February 2009, 17 years ago.
What is the penalty if Seacon Environment 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 Seacon Environment 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.