- Companies
- Civil engineering
- London
- Cso Omega Limited
Cso Omega Limited
- Company number
- 04464916
- Incorporated
- 19 Jun 200224 years trading
- Registered office
- 1 Kings Avenue, Winchmore Hill, London, N21 3NA
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other building completion and finishing
Cso Omega Limited is a 24-year-old private limited company registered in London, company number 04464916, one of 1,853 civil engineering 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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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 £2,243 (+0.2%) on the year before, to £1.2M.
- Net assets rose in 1 of 9 year-on-year comparisons on record.
- 3 employees on average, up from -3 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £1.2M | £1.2M | 3 | ||
| 31 Dec 2024 | £1.2M | £1.2M | £5,463 | -3 | |
| 31 Dec 2023 | £1.2M | £1.2M | £5,463 | 0 | |
| 31 Dec 2022 | £1.2M | £1.2M | £5,463 | 0 | |
| 31 Dec 2021 | £1.2M | £1.2M | £5,463 | 0 | |
| 31 Dec 2020 | £1.2M | £1.2M | £5,463 | 0 | |
| 31 Dec 2019 | £1.2M | £1.2M | £5,463 | 0 | |
| 31 Dec 2018 | £1.2M | £1.2M | £5,463 | ||
| 31 Dec 2017 | £1.2M | £1.2M | £5,463 | ||
| 31 Dec 2016 | £1.2M | £1.2M | £5,463 |
Where Cso Omega Limited is registered
The registered office is in London (N21), in the Enfield local authority area, London. Show N21 3NA on a map.
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Shared registered office
180 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Cso Omega 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 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
- 04464916
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 June 2002 (24 years ago)
- Registered office
- 1 Kings Avenue, Winchmore Hill, London, N21 3NA
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other building completion and finishing (SIC 43390) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 11 March 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 London
Other active civil engineering contractors registered in London.
- CT 11991948 Limited2019
- CTK Engineering Limited2026
- Ctlo Ltd2025
- Ctori Construction Consultants Limited2008
- Ctori Holdings Limited2003
- Culham Renewables Ltd2013
- Current Energy Group Limited2023
- Currie Power Ltd2019
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Cso Omega Limited's accounts due?
Cso Omega Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Cso Omega Limited'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 Cso Omega Limited still trading?
Cso Omega 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 Cso Omega Limited do?
Cso Omega Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other building completion and finishing (SIC 43390).
How old is Cso Omega Limited?
Cso Omega Limited was incorporated on 19 June 2002, 24 years ago.
What is the penalty if Cso Omega 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 Cso Omega 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.