- Companies
- Property developers
- Reading
- Black Diamond UK Development Ltd
Black Diamond UK Development Ltd
- Company number
- 10254154
- Incorporated
- 28 Jun 201610 years trading
- Registered office
- Burwood Cottage, Chalkhouse Green, Reading, RG4 9AJ
- Nature of business
- Development of building projects; Other letting and operating of own or leased real estate
Black Diamond UK Development Ltd is a 10-year-old private limited company registered in Reading, company number 10254154, one of 355 property development companies in Reading. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
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 up £3,231 (+4.2%) on the year before, to -£73K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2026 | -£73K | £1,276 | £463K | 0 | |
| 30 Jun 2025 | -£76K | £790 | £790 | £468K | 0 |
| 30 Jun 2024 | -£86K | £2,702 | £2,794 | £482K | 0 |
| 30 Jun 2023 | -£63K | £86 | £13K | £461K | 0 |
| 30 Jun 2022 | -£49K | £1,447 | £79K | £513K | 0 |
| 30 Jun 2021 | -£13K | £108K | £121K | 0 | |
| 30 Jun 2020 | -£375 | £15 | 2 | ||
| 30 Jun 2019 | £269K | £463K | £193K | ||
| 30 Jun 2018 | -£9,224 | £466K | £425K | ||
| 30 Jun 2017 | -£524 | £389K | £389K |
Who runs and owns Black Diamond UK Development Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** E*** | Director | Aug 2020 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| G*** E*** | Director | Jun 2016 | Oct 2020 |
Person with significant control
Where Black Diamond UK Development Ltd is registered
The registered office is in Reading (RG4), in the South Oxfordshire local authority area, South East. Show RG4 9AJ on a map.
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What happens if Black Diamond UK Development 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 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2029 | 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
- 10254154
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 June 2016 (10 years ago)
- Registered office
- Burwood Cottage, Chalkhouse Green, Reading, RG4 9AJ
- Nature of business
- Development of building projects (SIC 41100)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 30 June 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 Reading
Other active property development companies registered in Reading.
- Blenheim & Chester Developments Limited2014
- Blue Key Developments Ltd2017
- Bougie Developments Ltd2021
- BR Property Development One Limited2022
- Breffor Group Limited2020
- Bridge Investments Reading Ltd2026
- Bucklebury Holdings Limited2022
- Bucklebury Investments Limited2020
All property development companies in Reading · All trades in Reading · Property developers across the UK
Frequently asked questions
When are Black Diamond UK Development Ltd's accounts due?
Black Diamond UK Development Ltd's next accounts are due at Companies House by 31 March 2028 (in 535 days), covering the period to 30 June 2027.
When is Black Diamond UK Development Ltd's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is Black Diamond UK Development Ltd still trading?
Black Diamond UK Development 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 Black Diamond UK Development Ltd do?
Black Diamond UK Development Ltd is registered under Development of building projects (SIC 41100); Other letting and operating of own or leased real estate (SIC 68209).
How old is Black Diamond UK Development Ltd?
Black Diamond UK Development Ltd was incorporated on 28 June 2016, 10 years ago.
Who runs Black Diamond UK Development Ltd?
Black Diamond UK Development Ltd has 1 active director, the longest-serving appointed in Aug 2020. Their names and service addresses are on the Companies House register.
Who owns Black Diamond UK Development Ltd?
One person or company has significant control of Black Diamond UK Development Ltd: an individual (owns 25% to 50% of the shares).
What is the penalty if Black Diamond UK Development 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 Black Diamond UK Development 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.