- Company number
- 15684067
- Incorporated
- 26 Apr 20242 years trading
- Registered office
- 8 Wren Gardens, Dagenham, RM9 5YH
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; General cleaning of buildings; Other service activities n.e.c.
SG Allien Limited is a 2-year-old private limited company registered in Dagenham, company number 15684067, one of 681 building contractors in Dagenham. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 30 April 2025, as filed at Companies House.
Where SG Allien Limited is registered
The registered office is in Dagenham (RM9), in the Barking and Dagenham local authority area, London. Show RM9 5YH on a map.
Other trade companies in RM9
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- Surface Cleaning LtdCleaning companies
- S.V Top Building UK LtdBuilders
- Usman Homes LtdBuilders
- Araab Property LtdBuilders
- Ybn Transport LimitedMotor traders
- D&MS Building Services LtdSpecialist contractors
- RKLR Service LtdFinishing trades
What happens if SG Allien 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 15684067
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 April 2024 (2 years ago)
- Registered office
- 8 Wren Gardens, Dagenham, RM9 5YH
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
General cleaning of buildings (SIC 81210)
Other service activities n.e.c. (SIC 96090) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 25 April 2026
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 Dagenham
Other active building contractors registered in Dagenham.
- Shah Builders & Decorators Ltd2012
- Sharma London Construction Ltd2026
- Sidarav Limited2025
- Sidhuz Construction Ltd2024
- Singh Bricklayers (London) Ltd2024
- Singh Design & Build Limited2016
- Singla Developers Limited2025
- Sircu Services Ltd2025
All building contractors in Dagenham · All trades in Dagenham · Builders across the UK
Frequently asked questions
When are SG Allien Limited's accounts due?
SG Allien Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is SG Allien Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is SG Allien Limited still trading?
SG Allien 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 SG Allien Limited do?
SG Allien Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); General cleaning of buildings (SIC 81210); Other service activities n.e.c. (SIC 96090).
How old is SG Allien Limited?
SG Allien Limited was incorporated on 26 April 2024, 2 years ago.
What is the penalty if SG Allien 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 SG Allien 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.