- Companies
- Civil engineering
- Deal
- Keystone Groundworks & Civils Limited
Keystone Groundworks & Civils Limited
- Company number
- 17077376
- Incorporated
- 9 Mar 2026
- Registered office
- 37 William Pitt Avenue, Deal, CT14 9QE
- Nature of business
- Construction of other civil engineering projects n.e.c.
Keystone Groundworks & Civils Limited is a newly incorporated private limited company registered in Deal, company number 17077376, one of 14 civil engineering contractors in Deal. Its next accounts are due at Companies House on 9 December 2027, and its first CT600 is due at HMRC on 8 March 2028.
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.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Keystone Groundworks & Civils LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where Keystone Groundworks & Civils Limited is registered
The registered office is in Deal (CT14), in the Dover local authority area, South East. Show CT14 9QE on a map.
Other trade companies in CT14
- Victoria&Alex Construction LtdInstallers
- Shakticola Consultants LimitedProperty developers
- A W Carpentry LtdJoiners and carpenters
- Lens Groundwork & Utilities LtdCivil engineering
- MBM Electrical Services (Deal) LtdElectricians
- SBG Brickwork & Construction LtdFinishing trades
- Morgan P Utilities LimitedCivil engineering
- Eclectic Collection LtdMechanics and garages
What happens if Keystone Groundworks & 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 9 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Dec 2027 to 9 Jan 2028 | £150 |
| 1 to 3 months late | 10 Jan 2028 to 9 Mar 2028 | £375 |
| 3 to 6 months late | 10 Mar 2028 to 9 Jun 2028 | £750 |
| More than 6 months late | From 10 Jun 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
- 17077376
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 March 2026
- Registered office
- 37 William Pitt Avenue, Deal, CT14 9QE
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 Deal
Other active civil engineering contractors registered in Deal.
- Lens Groundwork & Utilities Ltd2026
- Morgan P Utilities Limited2026
- Neil Carrington Railway Limited2018
- Ordnance Precision Ltd2021
- S. Hull Limited2012
- White Engineering and Surveying Ltd2008
- A C Wing Contractors Limited2009
- BH Engineering Limited2006
All civil engineering contractors in Deal · All trades in Deal · Civil engineering across the UK
Frequently asked questions
When are Keystone Groundworks & Civils Limited's accounts due?
Keystone Groundworks & Civils Limited's next accounts are due at Companies House by 9 December 2027 (in 422 days), covering the period to 31 March 2027.
When is Keystone Groundworks & 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 8 March 2027, due by 8 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Keystone Groundworks & Civils Limited still trading?
Keystone Groundworks & 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 Groundworks & Civils Limited do?
Keystone Groundworks & Civils Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Keystone Groundworks & Civils Limited?
Keystone Groundworks & Civils Limited was incorporated on 9 March 2026, less than a year ago.
What is the penalty if Keystone Groundworks & 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 Groundworks & 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.