- Company number
- 12864945
- Incorporated
- 8 Sep 20206 years trading
- Registered office
- 15 ST. John Street, Whitland, Carmarthenshire, SA34 0AN
- Nature of business
- Construction of domestic buildings
Obsidian Developments Ltd is a 6-year-old private limited company registered in Whitland, company number 12864945, one of 8 building contractors in Whitland. 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 down £62K (-11.8%) on the year before, to £463K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £4.8M against £1.9M owed within a year: 2.5 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 | £463K | £661K | £4.8M | £1.9M | 0 |
| 31 Mar 2024 | £525K | £1M | £3M | £492K | 10 |
| 31 Mar 2023 | £257K | £117K | £4M | £694K | 6 |
| 31 Mar 2022 | £101K | £187K | 2 | ||
| 30 Sep 2021 | -£33K | £118K | £1.5M | £60K | 0 |
Where Obsidian Developments Ltd is registered
The registered office is in Whitland (SA34), in the Carmarthenshire local authority area, Wales. Show SA34 0AN on a map.
Other trade companies in SA34
- MD Morris Construction LimitedBuilders
- WWPM LimitedCleaning companies
- LBR Car and Commercials LtdMachinery repair and installation
- Wyn Davies Construction LtdBuilders
- Jay's Demolition LimitedGroundworks and demolition
- Amagon Energy LtdCivil engineering
- Coastal Leadwork & Roofing LimitedFinishing trades
- Wynne Phillips Truck Centre LtdMechanics and garages
Also registered at this address
2 other companies use the same registered office as Obsidian Developments Ltd.
- Arquebus LtdBuilders
- Cartouche LtdProperty developers
What happens if Obsidian Developments 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 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
- 12864945
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 September 2020 (6 years ago)
- Registered office
- 15 ST. John Street, Whitland, Carmarthenshire, SA34 0AN
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 September 2026
- Charges (mortgages)
- 1 outstanding of 2 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Whitland
Other active building contractors registered in Whitland.
- Robin Lydall Building Services Ltd2014
- Wyn Davies Construction Ltd2025
- Arquebus Ltd2021
- Gareth N Edwards Limited2003
- I J Griffiths Limited2011
- Lee & Phillips Ltd2017
- MD Morris Construction Limited2026
All building contractors in Whitland · All trades in Whitland · Builders across the UK
Frequently asked questions
When are Obsidian Developments Ltd's accounts due?
Obsidian Developments Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Obsidian Developments Ltd'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 Obsidian Developments Ltd still trading?
Obsidian Developments 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 Obsidian Developments Ltd do?
Obsidian Developments Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Obsidian Developments Ltd?
Obsidian Developments Ltd was incorporated on 8 September 2020, 6 years ago.
What is the penalty if Obsidian Developments 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 Obsidian Developments 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.