- Companies
- Installers
- Farnborough
- Keystone Groundworks Ltd
Keystone Groundworks Ltd
- Company number
- 16032295
- Incorporated
- 21 Oct 20241 year trading
- Registered office
- 269 Farnborough Road, Farnborough, GU14 7LY
- Nature of business
- Other construction installation
Keystone Groundworks Ltd is a 1-year-old private limited company registered in Farnborough, company number 16032295, one of 26 installation companies (insulation, lifts, shutters and similar) in Farnborough. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 31 October 2025, as filed at Companies House.
Where Keystone Groundworks Ltd is registered
The registered office is in Farnborough (GU14), in the Rushmoor local authority area, South East. Show GU14 7LY on a map.
Other trade companies in GU14
- Tak Brothers Builders LtdBuilders
- Revline Automotive LtdMotor traders
- The One Pound Boat LtdMachinery repair and installation
- Wood Lane Studio LtdJoiners and carpenters
- Raa2 LtdProperty developers
- South East Access Group LtdScaffolders
- Pestacular Pest Control LtdCleaning companies
- VH Services Propeties LtdBuilders
Shared registered office
48 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Keystone Groundworks 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16032295
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 October 2024 (1 year ago)
- Registered office
- 269 Farnborough Road, Farnborough, GU14 7LY
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 18 August 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Farnborough
Other active installation companies (insulation, lifts, shutters and similar) registered in Farnborough.
- Lowman Ventilation Systems Ltd2022
- M&J Building Services Limited2018
- Platinum Fire Solutions Ltd2014
- Regent Landscapes Limited2023
- RG Brickwork Ltd2019
- Sajesa Fabrications Limited2018
- Speed Dryline Ltd2020
- Steelbeam Installers Limited2022
All installation companies (insulation, lifts, shutters and similar) in Farnborough · All trades in Farnborough · Installers across the UK
Frequently asked questions
When are Keystone Groundworks Ltd's accounts due?
Keystone Groundworks Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Keystone Groundworks Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Keystone Groundworks Ltd still trading?
Keystone Groundworks 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 Keystone Groundworks Ltd do?
Keystone Groundworks Ltd is registered under Other construction installation (SIC 43290).
How old is Keystone Groundworks Ltd?
Keystone Groundworks Ltd was incorporated on 21 October 2024, 1 year ago.
What is the penalty if Keystone Groundworks 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 Keystone Groundworks 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.