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- Projects Quantum Ltd
Company profile · Civil engineering
Projects Quantum Ltd
Projects Quantum Ltd is a 2-year-old private limited company registered in Aylesbury, company number 15937063, one of 47 civil engineering contractors in Aylesbury. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Where Projects Quantum Ltd is registered
The registered office is in Aylesbury (HP22), in the Buckinghamshire local authority area, South East. Show HP22 7EW on a map.
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What happens if Projects Quantum 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15937063
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 September 2024 (2 years ago)
- Registered office
- 4 Fenlands Meadow, Broughton, Aylesbury, HP22 7EW
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
specialised design activities (SIC 74100)
Quantity surveying activities (SIC 74902)
Other education n.e.c. (SIC 85590) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 15 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 Aylesbury
Other active civil engineering contractors registered in Aylesbury.
- Rebarint Limited2022
- RHHL Solutions Ltd2016
- Saimadu Civil Engineering Limited2022
- Solaer UK Limited2013
- Solafields Limited2012
- Staunton Building Contractors Limited2002
- Vayoka Engineering Services Ltd2014
- Watts Engineering Limited2006
All civil engineering contractors in Aylesbury · All trades in Aylesbury · Civil engineering across the UK
Frequently asked questions
When are Projects Quantum Ltd's accounts due?
Projects Quantum Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Projects Quantum Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Projects Quantum Ltd still trading?
Projects Quantum 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 Projects Quantum Ltd do?
Projects Quantum Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); specialised design activities (SIC 74100); Quantity surveying activities (SIC 74902); Other education n.e.c. (SIC 85590).
How old is Projects Quantum Ltd?
Projects Quantum Ltd was incorporated on 4 September 2024, 2 years ago.
What is the penalty if Projects Quantum 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 Projects Quantum 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.