- Companies
- Specialist contractors
- Ipswich
- Project Obsidian Ltd
Project Obsidian Ltd
- Company number
- 16827461
- Incorporated
- 3 Nov 2025
- Registered office
- 1A Purplett Street, Ipswich, IP2 8HH
- Nature of business
- Other specialised construction activities n.e.c.
Project Obsidian Ltd is a newly incorporated private limited company registered in Ipswich, company number 16827461, one of 119 specialist construction companies in Ipswich. Its next accounts are due at Companies House on 3 August 2027, and its first CT600 is due at HMRC on 2 November 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Project Obsidian Ltd is registered
The registered office is in Ipswich (IP2), in the Ipswich local authority area, East of England. Show IP2 8HH on a map.
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- T S Bathrooms and Plumbing LtdPlumbers and heating engineers
What happens if Project Obsidian 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 3 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Aug 2027 to 3 Sep 2027 | £150 |
| 1 to 3 months late | 4 Sep 2027 to 3 Nov 2027 | £375 |
| 3 to 6 months late | 4 Nov 2027 to 3 Feb 2028 | £750 |
| More than 6 months late | From 4 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 16827461
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 November 2025
- Registered office
- 1A Purplett Street, Ipswich, IP2 8HH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
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 Ipswich
Other active specialist construction companies registered in Ipswich.
- Qto Services Limited2025
- R B Home and Garden Limited2014
- Red 5 Property Limited2012
- Resin Master East Anglia Ltd2023
- RSM Roofing Ltd2007
- Rua Construction Ltd2015
- S P M Brickwork Limited2009
- Sailstone Ltd2011
All specialist construction companies in Ipswich · All trades in Ipswich · Specialist contractors across the UK
Frequently asked questions
When are Project Obsidian Ltd's accounts due?
Project Obsidian Ltd's next accounts are due at Companies House by 3 August 2027 (in 295 days), covering the period to 30 November 2026.
When is Project Obsidian Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 2 November 2026, due by 2 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Project Obsidian Ltd still trading?
Project Obsidian 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 Project Obsidian Ltd do?
Project Obsidian Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Project Obsidian Ltd?
Project Obsidian Ltd was incorporated on 3 November 2025, less than a year ago.
What is the penalty if Project Obsidian 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 Project Obsidian 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.