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- Installation Operations Ltd
Company profile · Civil engineering
Installation Operations Ltd
Installation Operations Ltd is a 2-year-old private limited company registered in London, company number 15989139, one of 1,853 civil engineering contractors in London. Companies House shows its accounts as overdue: they were due on 1 July 2026.
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.
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Where Installation Operations Ltd is registered
The registered office is in London (WC2A), in the Westminster local authority area, London. Show WC2A 2JR on a map.
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Shared registered office
221 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 Installation Operations Ltd files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Jul 2026 to 1 Aug 2026 | £150 |
| 1 to 3 months late | 2 Aug 2026 to 1 Oct 2026 | £375 |
| 3 to 6 months late | 2 Oct 2026 to 1 Jan 2027 | £750 |
| More than 6 months late | From 2 Jan 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2026 | £200 |
| 3 months late | 31 Jan 2027 | another £200 |
| 6 months late | 30 Apr 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 15989139
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 October 2024 (2 years ago)
- Registered office
- 7 Bell Yard, Installation Operations Ltd, London, WC2A 2JR
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Other construction installation (SIC 43290)
Wired telecommunications activities (SIC 61100)
Wireless telecommunications activities (SIC 61200) - Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 30 September 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.
- Intay Engineering, Contracting and Trading (Igbr) Ltd2015
- Intec Energy Solutions Limited2024
- Integrated Solutions Consultancy Limited2017
- Integren Enfield Ltd2025
- Integren UK Ltd2025
- International Road Safety Ltd2019
- Inversiones Alagar Ltd2025
- Io Tourist Ltd2026
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Installation Operations Ltd's accounts due?
Installation Operations Ltd's accounts were due at Companies House on 1 July 2026 and the register shows them as overdue.
When is Installation Operations 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 30 September 2025, due by 30 September 2026, and one for the period to 31 October 2025, due by 31 October 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Installation Operations Ltd still trading?
Installation Operations Ltd is listed as active on the Companies House register (checked 12 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 Installation Operations Ltd do?
Installation Operations Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Other construction installation (SIC 43290); Wired telecommunications activities (SIC 61100); Wireless telecommunications activities (SIC 61200).
How old is Installation Operations Ltd?
Installation Operations Ltd was incorporated on 1 October 2024, 2 years ago.
What is the penalty if Installation Operations 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 Installation Operations Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.