- Companies
- Civil engineering
- Peterborough
- Keystone Civils Limited
Keystone Civils Limited
- Company number
- 16752762
- Incorporated
- 30 Sep 20251 year trading
- Registered office
- Lynchwood Park Peterborough Business Park, Lynch Wood, Peterborough, PE2 6FY
- Nature of business
- Construction of utility projects for electricity and telecommunications
Keystone Civils Limited is a 1-year-old private limited company registered in Peterborough, company number 16752762, one of 83 civil engineering contractors in Peterborough. Its next accounts are due at Companies House on 30 June 2027, and its first CT600 is due at HMRC on 29 September 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Keystone Civils Limited is registered
The registered office is in Peterborough (PE2), in the Peterborough local authority area, East of England. Show PE2 6FY on a map.
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What happens if Keystone Civils 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 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
- 16752762
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 September 2025 (1 year ago)
- Registered office
- Lynchwood Park Peterborough Business Park, Lynch Wood, Peterborough, PE2 6FY
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 26 August 2026
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 Peterborough
Other active civil engineering contractors registered in Peterborough.
- KPL Property Services Limited2016
- Kus Limited2020
- M.R.Contractors Limited2024
- McGookin Brickwork Ltd2025
- MG & Sons (Consultancy) Ltd2019
- Milky TM Limited2026
- MJJ Welding Limited2021
- MK Civils Solutions Ltd2026
All civil engineering contractors in Peterborough · All trades in Peterborough · Civil engineering across the UK
Frequently asked questions
When are Keystone Civils Limited's accounts due?
Keystone Civils Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Keystone Civils Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 29 September 2026, due by 29 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Keystone Civils Limited still trading?
Keystone Civils 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 Keystone Civils Limited do?
Keystone Civils Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Keystone Civils Limited?
Keystone Civils Limited was incorporated on 30 September 2025, 1 year ago.
What is the penalty if Keystone Civils 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 Keystone Civils 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.