- Companies
- Civil engineering
- Mountain Ash
- DSR Groundworks Ltd
DSR Groundworks Ltd
- Company number
- 09744081
- Incorporated
- 21 Aug 201511 years trading
- Registered office
- 19 Oakland Street, Oakland Street, Mountain Ash, Mid Glamorgan, CF45 3AL
- Nature of business
- Construction of other civil engineering projects n.e.c.
DSR Groundworks Ltd is a 11-year-old private limited company registered in Mountain Ash, company number 09744081, one of 12 civil engineering contractors in Mountain Ash. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for DSR Groundworks LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £44K (+16.8%) on the year before, to £308K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £262K against £59K owed within a year: 4.5 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £308K | £262K | £59K | 2 | |
| 31 May 2024 | £264K | £238K | £79K | 2 | |
| 31 May 2023 | £147K | £79K | £25K | 2 | |
| 31 May 2022 | £123K | £73K | £25K | 2 | |
| 31 May 2021 | £114K | £76K | £34K | 2 | |
| 31 May 2020 | £113K | £83K | £38K | 2 | |
| 31 May 2019 | £94K | £72K | £43K | ||
| 31 May 2018 | £79K | £66K | £36K | ||
| 31 May 2017 | £50K | £80K | £42K | ||
| 30 May 2017 | £50K | £80K | £42K |
Where DSR Groundworks Ltd is registered
The registered office is in Mountain Ash (CF45), in the Rhondda Cynon Taf local authority area, Wales. Show CF45 3AL on a map.
Other trade companies in CF45
- Pro Guard Home Improvements LtdRoofers
- Smiths Rendering & Resin LtdBuilders
- Ironrootslandscaping LimitedLandscapers and gardeners
- Lee Griffiths Contractors LimitedFinishing trades
- Theglossboss LtdCleaning companies
- Brickzen Constructions LtdInstallers
- STR Drylining LtdBuilders
- Greenvoltinfrastructure LtdCivil engineering
What happens if DSR Groundworks 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 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 09744081
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2015 (11 years ago)
- Registered office
- 19 Oakland Street, Oakland Street, Mountain Ash, Mid Glamorgan, CF45 3AL
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 20 August 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 Mountain Ash
Other active civil engineering contractors registered in Mountain Ash.
- Evanhalli Ltd2019
- I Fix Reinforcements Ltd2008
- JLT Rail Limited2020
- JWG Utilities Limited2017
- Marton (Civil Engineering) Limited1976
- MDF Rail Limited2016
- Prizm Engineering Ltd2025
- R Lewis Rail Services Limited2014
All civil engineering contractors in Mountain Ash · All trades in Mountain Ash · Civil engineering across the UK
Frequently asked questions
When are DSR Groundworks Ltd's accounts due?
DSR Groundworks Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is DSR Groundworks Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is DSR Groundworks Ltd still trading?
DSR Groundworks 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 DSR Groundworks Ltd do?
DSR Groundworks Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is DSR Groundworks Ltd?
DSR Groundworks Ltd was incorporated on 21 August 2015, 11 years ago.
What is the penalty if DSR Groundworks 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 DSR Groundworks 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.