- Companies
- Civil engineering
- Gloucester
- Black Mountain Developments Ltd
Black Mountain Developments Ltd
- Company number
- 11132108
- Incorporated
- 3 Jan 20188 years trading
- Registered office
- Epsilon House the Square, Brockworth, Gloucester, GL3 4AD
- Nature of business
- Construction of utility projects for fluids; Construction of other civil engineering projects n.e.c.; Engineering related scientific and technical consulting activities; Environmental consulting activities
Black Mountain Developments Ltd is a 8-year-old private limited company registered in Gloucester, company number 11132108, one of 44 civil engineering contractors in Gloucester. Its next accounts are due at Companies House on 28 March 2027, and the CT600 for the period to 28 June 2026 is due at HMRC on 28 June 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 up £829K (+83%) on the year before, to -£169K.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £668K against £572K owed within a year: 1.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 7 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | -£169K | £324K | £668K | £572K | 0 |
| 30 Jun 2024 | -£999K | £43K | £626K | £824K | 7 |
| 30 Jun 2023 | -£942K | £40K | £454K | £766K | 8 |
| 30 Jun 2022 | -£825K | £200K | £480K | £926K | 8 |
| 31 Dec 2020 | -£638K | £61K | £107K | £231K | 7 |
| 31 Dec 2019 | -£133K | £21K | £233K | £366K | 3 |
| 31 Dec 2018 | -£12K | £38K | £51K | £63K |
Public contracts won
Black Mountain Developments Ltd has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Westminster City Council | BT365- Porchester Square Heat Pump - Feasibility | 16 Mar 2026 |
Where Black Mountain Developments Ltd is registered
The registered office is in Gloucester (GL3), in the Tewkesbury local authority area, South West. Show GL3 4AD on a map.
Other trade companies in GL3
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- MN Maintenance and Management LimitedInstallers
- Ram (Southwest) LtdBuilders
- RF Harries & Co LtdBuilders
- PJT Installations LtdSpecialist contractors
- SLTR LimitedMotor traders
- J&B Cleaning Services LtdCleaning companies
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Also registered at this address
14 other companies use the same registered office as Black Mountain Developments Ltd.
- Asa Electrical Services LimitedElectricians
- Edward Blake LimitedProperty developers
- Elichem Resins U.K. LimitedSpecialist contractors
- Evesham Home Improvements LimitedGlaziers
- Evesham Plumbing Services LtdPlumbers and heating engineers
- KMJ Property Maintenance LimitedCivil engineering
- M.E. Wynn & Co. LimitedProperty developers
- McMurtry Ltd.Property developers
- Monere Construction LimitedBuilders
- Robert Deacon Builders LimitedBuilders
- Rodway Wilson Contracts LimitedBuilders
- Village Thatcher LimitedRoofers
- William Morrison (Cheltenham) LtdProperty developers
- Wynn Homes LimitedProperty developers
What happens if Black Mountain Developments 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 28 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Mar 2027 to 28 Apr 2027 | £150 |
| 1 to 3 months late | 29 Apr 2027 to 28 Jun 2027 | £375 |
| 3 to 6 months late | 29 Jun 2027 to 28 Sep 2027 | £750 |
| More than 6 months late | From 29 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Jun 2027 | £200 |
| 3 months late | 28 Sep 2027 | another £200 |
| 6 months late | 28 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Jun 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
- 11132108
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 January 2018 (8 years ago)
- Registered office
- Epsilon House the Square, Brockworth, Gloucester, GL3 4AD
- Nature of business
- Construction of utility projects for fluids (SIC 42210)
Construction of other civil engineering projects n.e.c. (SIC 42990)
Engineering related scientific and technical consulting activities (SIC 71122)
Environmental consulting activities (SIC 74901) - Year end
- 28 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 23 April 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Gloucester
Other active civil engineering contractors registered in Gloucester.
- Cheltenham Surfacing Company Limited1960
- Citi Utilities Limited2009
- Coral Developments Limited1990
- County Ground Work Services Ltd2025
- Craig Davies Engineering Limited2014
- Dan Waring Ltd2016
- Dean Martin Contractors Limited2006
- Digital Telecom Limited1991
All civil engineering contractors in Gloucester · All trades in Gloucester · Civil engineering across the UK
Frequently asked questions
When are Black Mountain Developments Ltd's accounts due?
Black Mountain Developments Ltd's next accounts are due at Companies House by 28 March 2027 (in 166 days), covering the period to 28 June 2026.
When is Black Mountain Developments Ltd's CT600 due?
The CT600 for the period to 28 June 2026 is due at HMRC by 28 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 March 2027.
Is Black Mountain Developments Ltd still trading?
Black Mountain Developments 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 Mountain Developments Ltd do?
Black Mountain Developments Ltd is registered under Construction of utility projects for fluids (SIC 42210); Construction of other civil engineering projects n.e.c. (SIC 42990); Engineering related scientific and technical consulting activities (SIC 71122); Environmental consulting activities (SIC 74901).
How old is Black Mountain Developments Ltd?
Black Mountain Developments Ltd was incorporated on 3 January 2018, 8 years ago.
Has Black Mountain Developments Ltd won public sector contracts?
Yes. Black Mountain Developments Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Westminster City Council.
What is the penalty if Black Mountain Developments 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 Mountain Developments 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.