- Companies
- Civil engineering
- London
- Utility City Ltd
Utility City Ltd
- Company number
- 15300259
- Incorporated
- 21 Nov 20232 years trading
- Registered office
- 20 Wenlock Road, London, N1 7GU
- Nature of business
- Construction of other civil engineering projects n.e.c.
Utility City Ltd is a 2-year-old private limited company registered in London, company number 15300259, one of 1,853 civil engineering contractors in London. Companies House shows its accounts as overdue: they were due on 31 August 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Utility City Ltd is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 7GU on a map.
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Shared registered office
1,583 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 Utility City Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2026 to 30 Sep 2026 | £150 |
| 1 to 3 months late | 1 Oct 2026 to 30 Nov 2026 | £375 |
| 3 to 6 months late | 1 Dec 2026 to 28 Feb 2027 | £750 |
| More than 6 months late | From 1 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 15300259
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 November 2023 (2 years ago)
- Registered office
- 20 Wenlock Road, London, N1 7GU
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 13 November 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.
- Utility Light Ltd2025
- Utility Network Specialist Limited2023
- Utility Supply Solution and Construction Ltd2026
- Uwaka Rail Services Ltd2023
- Valdec Limited2004
- Valens Construction Ltd2022
- Valentin Erita Construction Ltd2015
- Valon Construction Ltd2017
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Utility City Ltd's accounts due?
Utility City Ltd's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is Utility City Ltd's CT600 due?
The CT600 for the period to 30 November 2025 is due at HMRC by 30 November 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2026.
Is Utility City Ltd still trading?
Utility City 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 Utility City Ltd do?
Utility City Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Utility City Ltd?
Utility City Ltd was incorporated on 21 November 2023, 2 years ago.
What is the penalty if Utility City 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 Utility City 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.