Company profile · Builders
Green-Sinfield Limited
Green-Sinfield Limited is a 60-year-old private limited company registered in London, company number 00870131, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Green-Sinfield Limited is registered
The registered office is in London (W1T), in the Camden local authority area, London. Show W1T 4DE on a map.
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Also registered at this address
15 other companies use the same registered office as Green-Sinfield Limited.
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What happens if Green-Sinfield 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 00870131
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 January 1966 (60 years ago)
- Registered office
- 89 Whitfield Street, London, W1T 4DE
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 10 May 2026
- Charges (mortgages)
- 0 outstanding of 4 registered
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 London
Other active building contractors registered in London.
- Greenaffair Limited2012
- Greenbelt Construction Ltd2024
- Greenbirds Electrical & Maintenance Ltd2021
- Greenbuild Maintenance Sevices Ltd2022
- Greene Projects Limited2009
- Greener Energy Northwest Ltd2020
- Greensightgardens Ltd2026
- Greenstone Design & Construction Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Green-Sinfield Limited's accounts due?
Green-Sinfield Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Green-Sinfield Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Green-Sinfield Limited still trading?
Green-Sinfield 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 Green-Sinfield Limited do?
Green-Sinfield Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Green-Sinfield Limited?
Green-Sinfield Limited was incorporated on 31 January 1966, 60 years ago.
What is the penalty if Green-Sinfield 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 Green-Sinfield 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.