- Companies
- Finishing trades
- London
- Diamondstar Projects Ltd
Diamondstar Projects Ltd
- Company number
- 16724834
- Incorporated
- 17 Sep 20251 year trading
- Registered office
- Stirling House, 107 Stirling Road, London, N22 5BN
- Nature of business
- Other building completion and finishing
Diamondstar Projects Ltd is a 1-year-old private limited company registered in London, company number 16724834, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 17 June 2027, and its first CT600 is due at HMRC on 16 September 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 Diamondstar Projects Ltd is registered
The registered office is in London (N22), in the Haringey local authority area, London. Show N22 5BN on a map.
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What happens if Diamondstar Projects 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 17 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Jun 2027 to 17 Jul 2027 | £150 |
| 1 to 3 months late | 18 Jul 2027 to 17 Sep 2027 | £375 |
| 3 to 6 months late | 18 Sep 2027 to 17 Dec 2027 | £750 |
| More than 6 months late | From 18 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16724834
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 September 2025 (1 year ago)
- Registered office
- Stirling House, 107 Stirling Road, London, N22 5BN
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 16 September 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- Dicher Developments Limited2025
- Dida Construction Ltd2012
- Didel Limited2020
- Didu Limited2023
- Different Touch Property Services Ltd2019
- Diggs London Build Ltd2024
- Dim2017 Ltd2020
- Dima Interiors Limited2013
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Diamondstar Projects Ltd's accounts due?
Diamondstar Projects Ltd's next accounts are due at Companies House by 17 June 2027 (in 248 days), covering the period to 30 September 2026.
When is Diamondstar Projects 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 16 September 2026, due by 16 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamondstar Projects Ltd still trading?
Diamondstar Projects Ltd is listed as active on the Companies House register (checked 12 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 Diamondstar Projects Ltd do?
Diamondstar Projects Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Diamondstar Projects Ltd?
Diamondstar Projects Ltd was incorporated on 17 September 2025, 1 year ago.
What is the penalty if Diamondstar Projects 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 Diamondstar Projects Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.