C911 Ltd
- Company number
- 17154427
- Incorporated
- 13 Apr 2026
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Construction of utility projects for electricity and telecommunications
C911 Ltd is a newly incorporated private limited company registered in Covent Garden, company number 17154427, one of 132 civil engineering contractors in Covent Garden. Its next accounts are due at Companies House on 13 January 2028, and its first CT600 is due at HMRC on 12 April 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where C911 Ltd is registered
The registered office is in Covent Garden (WC2H), in the Camden local authority area, London. Show WC2H 9JQ on a map.
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Shared registered office
4,529 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 C911 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 13 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Jan 2028 to 13 Feb 2028 | £150 |
| 1 to 3 months late | 14 Feb 2028 to 13 Apr 2028 | £375 |
| 3 to 6 months late | 14 Apr 2028 to 13 Jul 2028 | £750 |
| More than 6 months late | From 14 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2029 | 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
- 17154427
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 April 2026
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
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 Covent Garden
Other active civil engineering contractors registered in Covent Garden.
- Coleman Electrical Engineering UK Limited2026
- Composite Design Studio Ltd2019
- Concrete Frames Limited2026
- Consult4Construction Ltd2026
- Corelift & Engineering Ltd2025
- Corinium Power Limited2022
- Countryside Fibre Ltd2023
- Crossgrid Limited2026
All civil engineering contractors in Covent Garden · All trades in Covent Garden · Civil engineering across the UK
Frequently asked questions
When are C911 Ltd's accounts due?
C911 Ltd's next accounts are due at Companies House by 13 January 2028 (in 458 days), covering the period to 30 April 2027.
When is C911 Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 12 April 2027, due by 12 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is C911 Ltd still trading?
C911 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 C911 Ltd do?
C911 Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is C911 Ltd?
C911 Ltd was incorporated on 13 April 2026, less than a year ago.
What is the penalty if C911 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 C911 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.