- Companies
- Civil engineering
- Hailsham
- Obsidian Groundworks and Civil Engineering Limited
Obsidian Groundworks and Civil Engineering Limited
- Company number
- 12092025
- Incorporated
- 8 Jul 20197 years trading
- Registered office
- Cortlandt, George Street, Hailsham, East Sussex, BN27 1AE
- Nature of business
- Construction of other civil engineering projects n.e.c.
Obsidian Groundworks and Civil Engineering Limited is a 7-year-old private limited company registered in Hailsham, company number 12092025, one of 13 civil engineering contractors in Hailsham. 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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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 £69K (+6.7%) on the year before, to £1.1M.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £428K against £189K owed within a year: 2.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £1.1M | £300K | £428K | £189K | 2 |
| 31 Jul 2024 | £1M | £779K | £844K | £244K | 2 |
| 31 Jul 2023 | £447K | £252K | £349K | £171K | 2 |
| 31 Jul 2022 | £78K | £158K | £235K | £159K | 2 |
| 31 Jul 2021 | £574 | £20K | £80K | £58K | 3 |
| 31 Jul 2020 | £469 | £34K | £126K | £96K | 2 |
Where Obsidian Groundworks and Civil Engineering Limited is registered
The registered office is in Hailsham (BN27), in the Wealden local authority area, South East. Show BN27 1AE on a map.
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Also registered at this address
3 other companies use the same registered office as Obsidian Groundworks and Civil Engineering Limited.
- Bamford Tree Management LtdLandscapers and gardeners
- Crocombe Building and Landscaping LimitedLandscapers and gardeners
- JLC Builders LtdFinishing trades
What happens if Obsidian Groundworks and Civil Engineering Limited 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
- 12092025
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 July 2019 (7 years ago)
- Registered office
- Cortlandt, George Street, Hailsham, East Sussex, BN27 1AE
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 4 July 2026
- Charges (mortgages)
- 2 outstanding of 3 registered
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 Hailsham
Other active civil engineering contractors registered in Hailsham.
- Owen Scaffold Contractors Limited1995
- P A Taylor Building & Block Paving Limited2004
- Property Care Builders and Decorators Limited2006
- Stephen Wilson Partnership Limited2001
- V.A.S. Maddison Limited1972
- WJB Formwork Services Limited2008
- Ace Building Solutions (Se) Ltd2023
- B Davies Utilities Ltd2024
All civil engineering contractors in Hailsham · All trades in Hailsham · Civil engineering across the UK
Frequently asked questions
When are Obsidian Groundworks and Civil Engineering Limited's accounts due?
Obsidian Groundworks and Civil Engineering Limited's next accounts are due at Companies House by 30 April 2027 (in 198 days), covering the period to 31 July 2026.
When is Obsidian Groundworks and Civil Engineering Limited'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 Obsidian Groundworks and Civil Engineering Limited still trading?
Obsidian Groundworks and Civil Engineering Limited 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 Obsidian Groundworks and Civil Engineering Limited do?
Obsidian Groundworks and Civil Engineering Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Obsidian Groundworks and Civil Engineering Limited?
Obsidian Groundworks and Civil Engineering Limited was incorporated on 8 July 2019, 7 years ago.
What is the penalty if Obsidian Groundworks and Civil Engineering Limited 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 Obsidian Groundworks and Civil Engineering Limited 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.