- Company number
- 17127512
- Incorporated
- 31 Mar 2026
- Registered office
- 500 Canterbury Way, Stevenage, SG1 4ED
- Nature of business
- Construction of commercial buildings
CLN Groundwork Ltd is a newly incorporated private limited company registered in Stevenage, company number 17127512, one of 140 building contractors in Stevenage. Its next accounts are due at Companies House on 31 December 2027, and its first CT600 is due at HMRC on 30 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.
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Where CLN Groundwork Ltd is registered
The registered office is in Stevenage (SG1), in the Stevenage local authority area, East of England. Show SG1 4ED on a map.
Other trade companies in SG1
- Masterplumbing&Heating LtdPlumbers and heating engineers
- Ohiggins Property Solutions LtdProperty developers
- Bird Detailing LtdCleaning companies
- Tedted Engineering LtdMechanics and garages
- DSS Facilities LtdFacilities management
- Macala Engineering LimitedSpecialist contractors
- Regency Detailing LtdMechanics and garages
- Ashtons Property Group LtdProperty developers
What happens if CLN Groundwork 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 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
- 17127512
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 March 2026
- Registered office
- 500 Canterbury Way, Stevenage, SG1 4ED
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 Stevenage
Other active building contractors registered in Stevenage.
- Construct Maintenance Ltd2026
- County Renovations Limited2022
- CR and Sons Ltd2020
- Cristian Ltd.2014
- D Herdman Brickwork Ltd2018
- D M Harley Construction Limited2018
- D Selby Brickwork Limited2023
- Daniel Lewis Construction Ltd2017
All building contractors in Stevenage · All trades in Stevenage · Builders across the UK
Frequently asked questions
When are CLN Groundwork Ltd's accounts due?
CLN Groundwork Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is CLN Groundwork Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 March 2027, due by 30 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 CLN Groundwork Ltd still trading?
CLN Groundwork 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 CLN Groundwork Ltd do?
CLN Groundwork Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is CLN Groundwork Ltd?
CLN Groundwork Ltd was incorporated on 31 March 2026, less than a year ago.
What is the penalty if CLN Groundwork 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 CLN Groundwork 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.