- Company number
- 16118101
- Incorporated
- 4 Dec 20241 year trading
- Registered office
- 252 Grange Road, London, E13 0HG
- Nature of business
- Construction of domestic buildings; Other building completion and finishing; Temporary employment agency activities
123 Site Solutions Ltd is a 1-year-old private limited company registered in London, company number 16118101, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 December 2025, as filed at Companies House.
Where 123 Site Solutions Ltd is registered
The registered office is in London (E13), in the Newham local authority area, London. Show E13 0HG on a map.
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What happens if 123 Site Solutions 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16118101
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 December 2024 (1 year ago)
- Registered office
- 252 Grange Road, London, E13 0HG
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390)
Temporary employment agency activities (SIC 78200) - Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 23 February 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.
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Frequently asked questions
When are 123 Site Solutions Ltd's accounts due?
123 Site Solutions Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is 123 Site Solutions Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is 123 Site Solutions Ltd still trading?
123 Site Solutions Ltd is listed as active on the Companies House register (checked 13 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 123 Site Solutions Ltd do?
123 Site Solutions Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390); Temporary employment agency activities (SIC 78200).
How old is 123 Site Solutions Ltd?
123 Site Solutions Ltd was incorporated on 4 December 2024, 1 year ago.
What is the penalty if 123 Site Solutions 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 123 Site Solutions Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.