- Companies
- Civil engineering
- Rainham
- Si Civils Ltd
Si Civils Ltd
- Company number
- 14775322
- Incorporated
- 3 Apr 20233 years trading
- Registered office
- First Floor Office 25A C E M E Innovation Centre, Marsh Way, Rainham, RM13 8EU
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other engineering activities
Si Civils Ltd is a 3-year-old private limited company registered in Rainham, company number 14775322, one of 32 civil engineering contractors in Rainham. 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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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £1,267 (+397.2%) on the year before, to £1,586.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £1,586 | £18K | 1 | ||
| 30 Apr 2024 | £319 | £3,294 | 1 |
Where Si Civils Ltd is registered
The registered office is in Rainham (RM13), in the Havering local authority area, London. Show RM13 8EU on a map.
Other trade companies in RM13
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- Namto LtdBuilders
- Digline Utilities LtdBuilders
- A & M Heating Plumbing LimitedPlumbers and heating engineers
- Cultured Auto LtdMechanics and garages
- Skyway Home LtdSpecialist contractors
- Car Sales Direct LtdMotor traders
- TLL Engineering Ltd LtdBuilders
Also registered at this address
9 other companies use the same registered office as Si Civils Ltd.
- Ay Homes Investment LimitedProperty developers
- Crystal Diamonds Cleaning LtdCleaning companies
- Galley Maintenance LtdSpecialist contractors
- Gardens Design & Build LtdLandscapers and gardeners
- Jai CSS LtdCivil engineering
- Kobis Engineering UK LtdCivil engineering
- Newgroundglobal LimitedCleaning companies
- Nurenewables Heating LtdPlumbers and heating engineers
- Pad & Nessa Properties LtdBuilders
What happens if Si Civils 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 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
- 14775322
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 April 2023 (3 years ago)
- Registered office
- First Floor Office 25A C E M E Innovation Centre, Marsh Way, Rainham, RM13 8EU
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other engineering activities (SIC 71129) - Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 2 April 2026
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 Rainham
Other active civil engineering contractors registered in Rainham.
- Vemak Ltd2016
- Yp Electricians Ltd2017
- A&K Civil Engineering Ltd2025
- Arv Contractors Ltd2023
- Bespoke Estate Management Ltd2022
- BKPB Civil Engineering Se Ltd2023
- Blara Safety UK Limited2007
- Brighter Developments Ltd2022
All civil engineering contractors in Rainham · All trades in Rainham · Civil engineering across the UK
Frequently asked questions
When are Si Civils Ltd's accounts due?
Si Civils Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Si Civils Ltd'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 Si Civils Ltd still trading?
Si Civils 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 Si Civils Ltd do?
Si Civils Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other engineering activities (SIC 71129).
How old is Si Civils Ltd?
Si Civils Ltd was incorporated on 3 April 2023, 3 years ago.
What is the penalty if Si Civils 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 Si Civils 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.