- Company number
- 15860879
- Incorporated
- 26 Jul 20242 years trading
- Registered office
- Unit 2,, 20 Woodland Avenue, Slough, SL1 3BU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Retail sale via mail order houses or via Internet
Blackstone Private Ltd is a 2-year-old private limited company registered in Slough, company number 15860879, one of 683 building contractors in Slough. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 July 2025, as filed at Companies House.
Where Blackstone Private Ltd is registered
The registered office is in Slough (SL1), in the Slough local authority area, South East. Show SL1 3BU on a map.
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Also registered at this address
21 other companies use the same registered office as Blackstone Private Ltd.
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- Lemon Squeezy Cleaning Services LtdCleaning companies
- Mas Plumbing & Heating Services LtdPlumbers and heating engineers
- Next Generation Construction LtdInstallers
- Peak Performance Roofing and Building LtdRoofers
- Prime Roofcure LtdRoofers
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What happens if Blackstone Private 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 15860879
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 July 2024 (2 years ago)
- Registered office
- Unit 2,, 20 Woodland Avenue, Slough, SL1 3BU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Retail sale via mail order houses or via Internet (SIC 47910) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 25 July 2026
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 Slough
Other active building contractors registered in Slough.
- BMT Recruitment Services Ltd2026
- Bowleys Building Services Ltd2025
- Braham Construction Limited2021
- Brandon Builders Ltd2022
- Brick-Row Building Solutions Ltd2021
- Brit Build Group Ltd2016
- Brit Man4S Ltd2017
- Britstone Construction Ltd2025
All building contractors in Slough · All trades in Slough · Builders across the UK
Frequently asked questions
When are Blackstone Private Ltd's accounts due?
Blackstone Private Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Blackstone Private Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Blackstone Private Ltd still trading?
Blackstone Private 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 Blackstone Private Ltd do?
Blackstone Private Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Retail sale via mail order houses or via Internet (SIC 47910).
How old is Blackstone Private Ltd?
Blackstone Private Ltd was incorporated on 26 July 2024, 2 years ago.
What is the penalty if Blackstone Private 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 Blackstone Private 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.