- Companies
- Civil engineering
- Barnsley
- Diablo Groundworks & Civils Ltd
Diablo Groundworks & Civils Ltd
- Company number
- 13549589
- Incorporated
- 5 Aug 20215 years trading
- Registered office
- Unit 12 Athersley Business Centre, Edwins Close, Barnsley, South Yorkshire, S71 3BH
- Nature of business
- Construction of other civil engineering projects n.e.c.
Diablo Groundworks & Civils Ltd is a 5-year-old private limited company registered in Barnsley, company number 13549589, one of 89 civil engineering contractors in Barnsley. Its next accounts are due at Companies House on 31 May 2027, and its first CT600 is due at HMRC on 31 May 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 £187 (+1.1%) on the year before, to £17K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £32K against £15K owed within a year: 2.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £17K | £11K | £32K | £15K | 1 |
| 31 Aug 2024 | £17K | £1,958 | £24K | £7,485 | 1 |
| 31 Aug 2023 | £28K | £5,740 | £45K | £18K | 1 |
| 31 Aug 2022 | £9,239 | £1 | £17K | £8,876 | 1 |
Where Diablo Groundworks & Civils Ltd is registered
The registered office is in Barnsley (S71), in the Barnsley local authority area, Yorkshire and The Humber. Show S71 3BH on a map.
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What happens if Diablo Groundworks & Civils 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 13549589
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 August 2021 (5 years ago)
- Registered office
- Unit 12 Athersley Business Centre, Edwins Close, Barnsley, South Yorkshire, S71 3BH
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 4 August 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- Diablo Groundworks Ltd (until 15 Feb 2023)
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 Barnsley
Other active civil engineering contractors registered in Barnsley.
- DMR Construction and Groundwork Services Limited2017
- Elite Mark Group Ltd2024
- Elm Quantity Surveying Services Limited2005
- Ex-Worx Aggregates Ltd2021
- Foulkes Holdings Limited2017
- Frank Tucker Limited1935
- GCB Utilities Ltd2020
- Global Civils Limited2026
All civil engineering contractors in Barnsley · All trades in Barnsley · Civil engineering across the UK
Frequently asked questions
When are Diablo Groundworks & Civils Ltd's accounts due?
Diablo Groundworks & Civils Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Diablo Groundworks & Civils 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 31 May 2026, due by 31 May 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diablo Groundworks & Civils Ltd still trading?
Diablo Groundworks & Civils 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 Diablo Groundworks & Civils Ltd do?
Diablo Groundworks & Civils Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Diablo Groundworks & Civils Ltd?
Diablo Groundworks & Civils Ltd was incorporated on 5 August 2021, 5 years ago.
What is the penalty if Diablo Groundworks & Civils 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 Diablo Groundworks & Civils 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.