- Companies
- Property developers
- London
- Obsidian Strategic Ltd
Obsidian Strategic Ltd
- Company number
- 10430940
- Incorporated
- 17 Oct 20169 years trading
- Registered office
- 36 Walpole Street, London, SW3 4QS
- Nature of business
- Development of building projects
Obsidian Strategic Ltd is a 9-year-old private limited company registered in London, company number 10430940, one of 14,100 property development companies in London. 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 £618K (-46.1%) on the year before, to -£2M.
- Current assets of £1.1M against £3.1M owed within a year: 0.4 times cover.
- 8 employees on average during the year.
- Balance sheets on record for 3 years, 2018 to 2020.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2020 | -£2M | £75K | £1.1M | £3.1M | 8 |
| 31 Mar 2019 | -£1.3M | £145K | £809K | £2.2M | 8 |
| 31 Mar 2018 | -£573K | £93K | £305K | £888K | 4 |
Where Obsidian Strategic Ltd is registered
The registered office is in London (SW3), in the Kensington and Chelsea local authority area, London. Show SW3 4QS on a map.
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Also registered at this address
12 other companies use the same registered office as Obsidian Strategic Ltd.
- 25 Oxshott Rise LtdBuilders
- Horticultural Place Developments LimitedProperty developers
- Martin's Design and Construction LimitedProperty developers
- Martin's Devco LimitedProperty developers
- Martin's Development A1 LimitedProperty developers
- Martin's Estates (Clerkenwell) LimitedProperty developers
- Martin's Properties (Chelsea) LimitedProperty developers
- Martin's Properties (Os) LimitedProperty developers
- Martin's Properties (Parsons Green) LimitedProperty developers
- Martin's Properties Holdings LimitedProperty developers
- Obsidian Strategic Asset Management LimitedProperty developers
- Obsidian Strategic RC LimitedProperty developers
What happens if Obsidian Strategic 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
- 10430940
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 October 2016 (9 years ago)
- Registered office
- 36 Walpole Street, London, SW3 4QS
- 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
- 5 September 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 London
Other active property development companies registered in London.
- Obsidian Strategic RC Limited2017
- Obsidianpropertyinvestments Ltd2026
- Occra Developments Limited2005
- Ocean Sphinx Construction Ltd2021
- Oceana Developments Limited2025
- Oceandale Homes Ltd2025
- Oceanstorm Homes Limited2021
- Och Truro Developments Limited2017
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Obsidian Strategic Ltd's accounts due?
Obsidian Strategic 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 Strategic 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 Strategic Ltd still trading?
Obsidian Strategic 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 Strategic Ltd do?
Obsidian Strategic Ltd is registered under Development of building projects (SIC 41100).
How old is Obsidian Strategic Ltd?
Obsidian Strategic Ltd was incorporated on 17 October 2016, 9 years ago.
What is the penalty if Obsidian Strategic 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 Strategic 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.