- Companies
- Civil engineering
- Darlington
- SD Roadstone Ltd
SD Roadstone Ltd
- Company number
- 10866426
- Incorporated
- 14 Jul 20179 years trading
- Registered office
- Imperial Centre, Grange Road, Darlington, DL1 5NQ
- Nature of business
- Construction of roads and motorways
SD Roadstone Ltd is a 9-year-old private limited company registered in Darlington, company number 10866426, one of 42 civil engineering contractors in Darlington. 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.
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 SD Roadstone 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 down £712 (-1.4%) on the year before, to -£51K.
- Net assets rose in 0 of 7 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 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£51K | £36K | 0 | ||
| 31 Jul 2024 | -£50K | £36K | 0 | ||
| 31 Jul 2023 | -£50K | £0 | £29K | 0 | |
| 31 Jul 2022 | -£49K | £215 | £29K | 2 | |
| 31 Jul 2021 | -£31K | £24K | £42K | 2 | |
| 31 Jul 2020 | -£29K | £16K | £54K | 2 | |
| 31 Jul 2019 | -£25K | £10K | £48K | 2 | |
| 31 Jul 2018 | £14K | £14K | £16K |
Where SD Roadstone Ltd is registered
The registered office is in Darlington (DL1), in the Darlington local authority area, North East. Show DL1 5NQ on a map.
Other trade companies in DL1
- Darlo Car Wash LtdMechanics and garages
- Home by Aym LtdProperty developers
- Simply Gleaming LtdCleaning companies
- Sinead the Cleaning Lady LtdCleaning companies
- BB Optichrome LimitedCleaning companies
- JB Car & Commercials LtdMotor traders
- Egtc LtdLandscapers and gardeners
- LSS Contractors Ne LtdCivil engineering
Also registered at this address
2 other companies use the same registered office as SD Roadstone Ltd.
- Esw Contractors LtdRoofers
- Euro Surface Tech LtdCivil engineering
What happens if SD Roadstone 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 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
- 10866426
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2017 (9 years ago)
- Registered office
- Imperial Centre, Grange Road, Darlington, DL1 5NQ
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 13 July 2025
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 Darlington
Other active civil engineering contractors registered in Darlington.
- Stejobell Ltd2022
- Stonemouse Limited2015
- T. M. Ward (Darlington) Limited1992
- Thurlwell Engineering Ltd2025
- Todds Highway Maintenance Limited1996
- W.F. Contractors Ltd2012
- Wharton Construction Limited1985
- Zapbyte Ltd2025
All civil engineering contractors in Darlington · All trades in Darlington · Civil engineering across the UK
Frequently asked questions
When are SD Roadstone Ltd's accounts due?
SD Roadstone Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is SD Roadstone Ltd'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 SD Roadstone Ltd still trading?
SD Roadstone Ltd is listed as active on the Companies House register (checked 12 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 SD Roadstone Ltd do?
SD Roadstone Ltd is registered under Construction of roads and motorways (SIC 42110).
How old is SD Roadstone Ltd?
SD Roadstone Ltd was incorporated on 14 July 2017, 9 years ago.
What is the penalty if SD Roadstone 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 SD Roadstone Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.