- Company number
- 15802207
- Incorporated
- 25 Jun 20242 years trading
- Registered office
- 110 Sleaford Street, Cambridge, CB1 2PU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Cambridge Cornerstone Limited is a 2-year-old private limited company registered in Cambridge, company number 15802207, one of 238 building contractors in Cambridge. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 June 2025, as filed at Companies House.
Where Cambridge Cornerstone Limited is registered
The registered office is in Cambridge (CB1), in the Cambridge local authority area, East of England. Show CB1 2PU on a map.
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What happens if Cambridge Cornerstone 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 15802207
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 June 2024 (2 years ago)
- Registered office
- 110 Sleaford Street, Cambridge, CB1 2PU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 7 August 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Cambridge
Other active building contractors registered in Cambridge.
- Cambridge First Limited1991
- Cambridge Garden Office Ltd2025
- Cambridge Garden Studios Ltd2015
- Cambridgevista Ltd2023
- Cambs Building Group Ltd2024
- Cambsite Ltd2018
- Cartainer Ltd2025
- Casa Mia Developments (No 1) Limited2011
All building contractors in Cambridge · All trades in Cambridge · Builders across the UK
Frequently asked questions
When are Cambridge Cornerstone Limited's accounts due?
Cambridge Cornerstone Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Cambridge Cornerstone Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Cambridge Cornerstone Limited still trading?
Cambridge Cornerstone 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 Cambridge Cornerstone Limited do?
Cambridge Cornerstone Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Cambridge Cornerstone Limited?
Cambridge Cornerstone Limited was incorporated on 25 June 2024, 2 years ago.
What is the penalty if Cambridge Cornerstone 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 Cambridge Cornerstone 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.