- Companies
- Civil engineering
- Quantum Site Services Limited
Quantum Site Services Limited
- Company number
- 06742823
- Incorporated
- 6 Nov 200817 years trading
- Registered office
- 11 Church Close, Stainton, Middlesbrough, TS8 9AF
- Nature of business
- Construction of other civil engineering projects n.e.c.
Quantum Site Services Limited is a 17-year-old private limited company registered in Stainton, company number 06742823, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £38K on the year before, to £39K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £77K against £80K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £39K | £77K | £80K | 2 | |
| 31 Mar 2025 | £1,293 | £76K | £90K | 2 | |
| 31 Mar 2024 | £8,869 | £75K | £77K | 2 | |
| 31 Mar 2023 | £5,250 | £41K | £47K | 2 | |
| 31 Mar 2022 | £1,781 | £25K | £36K | 2 | |
| 31 Mar 2021 | £362 | £21K | £31K | 2 | |
| 31 Mar 2020 | £19K | £57K | £48K | 2 | |
| 31 Mar 2019 | £39K | £72K | £42K | ||
| 31 Mar 2018 | £43K | £93K | £62K | ||
| 31 Mar 2017 | £59K | £107K | £85K |
Where Quantum Site Services Limited is registered
The registered office is in Stainton (TS8), in the Middlesbrough local authority area, North East. Show TS8 9AF on a map.
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What happens if Quantum Site Services 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 06742823
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 November 2008 (17 years ago)
- Registered office
- 11 Church Close, Stainton, Middlesbrough, TS8 9AF
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 6 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
Other active civil engineering contractors.
Frequently asked questions
When are Quantum Site Services Limited's accounts due?
Quantum Site Services Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Quantum Site Services Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Quantum Site Services Limited still trading?
Quantum Site Services 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 Quantum Site Services Limited do?
Quantum Site Services Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Quantum Site Services Limited?
Quantum Site Services Limited was incorporated on 6 November 2008, 17 years ago.
What is the penalty if Quantum Site Services 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 Quantum Site Services 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.