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- Saeng Services Ltd
Company profile · Civil engineering
Saeng Services Ltd
Saeng Services Ltd is a 2-year-old private limited company registered in London, company number 15365946, one of 1,853 civil engineering contractors in London.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Saeng Services Ltd is registered
The registered office is in London (SE11), in the Lambeth local authority area, London. Show SE11 6DW on a map.
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What happens if Saeng Services 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- 15365946
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 December 2023 (2 years ago)
- Registered office
- Flat 6 ST. Olaves Mansions, Walnut Tree Walk, London, SE11 6DW
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other specialised construction activities n.e.c. (SIC 43999)
Engineering related scientific and technical consulting activities (SIC 71122)
Other engineering activities (SIC 71129) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 20 December 2025
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 London
Other active civil engineering contractors registered in London.
- Safelane Ltd2019
- Sagewood Limited1987
- Sai Ak Construction Limited2022
- Sajmalik Limited2015
- Samjet Limited2015
- Sarwlogistics Ltd2026
- Satarem Engineering, Contracting, & Consultancy Ltd2025
- Saturn Track Limited2024
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Saeng Services Ltd's accounts due?
The register showed Saeng Services Ltd's accounts as due on 30 September 2026. That date has passed; the Companies House register shows whether they have been filed since.
When is Saeng Services Ltd's CT600 due?
The CT600 for the period to 31 December 2025 is due at HMRC by 31 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2026.
Is Saeng Services Ltd still trading?
Saeng Services 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 Saeng Services Ltd do?
Saeng Services Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other specialised construction activities n.e.c. (SIC 43999); Engineering related scientific and technical consulting activities (SIC 71122); Other engineering activities (SIC 71129).
How old is Saeng Services Ltd?
Saeng Services Ltd was incorporated on 21 December 2023, 2 years ago.
What is the penalty if Saeng Services 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 Saeng Services 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.