- Companies
- Civil engineering
- London
- Sigma Ict and Engineering Ltd
Sigma Ict and Engineering Ltd
- Company number
- 16160906
- Incorporated
- 3 Jan 20251 year trading
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Construction of utility projects for electricity and telecommunications; Information technology consultancy activities
Sigma Ict and Engineering Ltd is a 1-year-old private limited company registered in London, company number 16160906, one of 1,853 civil engineering contractors in London. Companies House shows its accounts as overdue: they were due on 3 October 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 Sigma Ict and Engineering Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
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Shared registered office
2,436 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 Sigma Ict and Engineering Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Oct 2026 to 3 Nov 2026 | £150 |
| 1 to 3 months late | 4 Nov 2026 to 3 Jan 2027 | £375 |
| 3 to 6 months late | 4 Jan 2027 to 3 Apr 2027 | £750 |
| More than 6 months late | From 4 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16160906
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 January 2025 (1 year ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Information technology consultancy activities (SIC 62020) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 2 January 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.
- Signal Services Ltd1997
- Silva JR Engineering Ltd2017
- Silverwood Building Services Limited2010
- Simbaz Group UK Ltd2018
- Simo Consulting Limited2014
- Simple Stone TM Limited2024
- Simply 4 Group Ltd2019
- Single Bore Multiple Anchor Ltd.2000
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Sigma Ict and Engineering Ltd's accounts due?
Sigma Ict and Engineering Ltd's accounts were due at Companies House on 3 October 2026 and the register shows them as overdue.
When is Sigma Ict and Engineering 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 2 January 2026, due by 2 January 2027, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sigma Ict and Engineering Ltd still trading?
Sigma Ict and Engineering 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 Sigma Ict and Engineering Ltd do?
Sigma Ict and Engineering Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Information technology consultancy activities (SIC 62020).
How old is Sigma Ict and Engineering Ltd?
Sigma Ict and Engineering Ltd was incorporated on 3 January 2025, 1 year ago.
What is the penalty if Sigma Ict and Engineering 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 Sigma Ict and Engineering 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.