- Companies
- Civil engineering
- Rotherham
- Quantum Construction & Rail Services Ltd
Quantum Construction & Rail Services Ltd
- Company number
- 07260351
- Incorporated
- 20 May 201016 years trading
- Registered office
- B11 Aven Industrial Estate Tickhill Road, Maltby, Rotherham, South Yorkshire, S66 7QR
- Nature of business
- Construction of railways and underground railways
Quantum Construction & Rail Services Ltd is a 16-year-old private limited company registered in Rotherham, company number 07260351, one of 83 civil engineering contractors in Rotherham. 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 Quantum Construction & Rail Services 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 £93K (+17.7%) on the year before, to £620K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £680K against £202K owed within a year: 3.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £620K | £276K | £680K | £202K | 0 |
| 31 May 2024 | £527K | £88K | £507K | £148K | 0 |
| 31 May 2023 | £476K | £117K | £333K | £55K | 0 |
| 31 May 2022 | £411K | £146K | £407K | £160K | 0 |
| 31 May 2021 | £521K | £236K | £399K | £40K | 0 |
| 31 May 2020 | £554K | £101K | £596K | £129K | 0 |
| 31 May 2019 | £465K | £159K | £446K | £87K | |
| 31 May 2018 | £561K | £430K | £632K | £102K | |
| 31 May 2017 | £763K | £632K | £1M | £349K | |
| 31 May 2016 | £902K | £177K | £1.3M | £453K |
Where Quantum Construction & Rail Services Ltd is registered
The registered office is in Rotherham (S66), in the Rotherham local authority area, Yorkshire and The Humber. Show S66 7QR on a map.
Other trade companies in S66
- Mac Elec Services LtdElectricians
- TLR Fire LtdInstallers
- Solar Tekk LtdInstallers
- Viper Roofing LtdInstallers
- Trebor Clad LtdBuilders
- Elite Con LtdBuilders
- Cav Wall LtdBuilders
- Tak Tech LtdBuilders
What happens if Quantum Construction & Rail Services 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
- 07260351
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 May 2010 (16 years ago)
- Registered office
- B11 Aven Industrial Estate Tickhill Road, Maltby, Rotherham, South Yorkshire, S66 7QR
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 16 November 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 Rotherham
Other active civil engineering contractors registered in Rotherham.
- R C Electrical and Security Ltd2023
- Railform Ltd2021
- Roadtar Ltd2026
- Rushforth Construction Ltd2023
- Site Engineering Services (West Yorkshire) Limited2014
- Sonnet Building Advisors Ltd2026
- Streamline Utility Solutions Ltd2025
- Substation Mechanical Electrical Services Ltd2024
All civil engineering contractors in Rotherham · All trades in Rotherham · Civil engineering across the UK
Frequently asked questions
When are Quantum Construction & Rail Services Ltd's accounts due?
Quantum Construction & Rail Services 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 Quantum Construction & Rail Services 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 Quantum Construction & Rail Services Ltd still trading?
Quantum Construction & Rail Services 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 Quantum Construction & Rail Services Ltd do?
Quantum Construction & Rail Services Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is Quantum Construction & Rail Services Ltd?
Quantum Construction & Rail Services Ltd was incorporated on 20 May 2010, 16 years ago.
What is the penalty if Quantum Construction & Rail Services 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 Quantum Construction & Rail Services 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.