- Companies
- Civil engineering
- London
- Cyiops Ltd
Cyiops Ltd
- Company number
- 12365840
- Incorporated
- 16 Dec 20196 years trading
- Registered office
- Unit Da2 Sutherland House, 43 Sutherland Road, London, E17 6BU
- Nature of business
- Construction of other civil engineering projects n.e.c.; Architectural activities; Engineering related scientific and technical consulting activities
Cyiops Ltd is a 6-year-old private limited company registered in London, company number 12365840, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £10K on the year before, to £11K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £32K against £26K owed within a year: 1.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £11K | £32K | £26K | 1 | |
| 30 Sep 2024 | £732 | £9,090 | £14K | 1 | |
| 30 Sep 2023 | £235 | £3,677 | £10K | 1 | |
| 30 Sep 2022 | £1,100 | £3,685 | £19K | £18K | 1 |
| 30 Sep 2021 | £100 | £469 | £5,181 | £5,081 | 1 |
| 30 Sep 2020 | £1,249 | £1,262 | £8,762 | £6,891 | 1 |
Who runs and owns Cyiops Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| C*** Y*** | Director | Dec 2019 |
Person with significant control
Where Cyiops Ltd is registered
The registered office is in London (E17), in the Waltham Forest local authority area, London. Show E17 6BU on a map.
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Shared registered office
58 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 Cyiops 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 12365840
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 December 2019 (6 years ago)
- Registered office
- Unit Da2 Sutherland House, 43 Sutherland Road, London, E17 6BU
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Architectural activities (SIC 71111)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 15 December 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.
- Cypron International Consulting Engineers Limited2021
- D Construction London Limited2013
- D F O Donnell Engineering Ltd2015
- D M Rail Limited2016
- D M W Developments Limited2004
- D R Formwork Limited2010
- D Wok TM Services Limited2023
- D&E Groundworks Services Ltd2026
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Cyiops Ltd's accounts due?
Cyiops Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Cyiops Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Cyiops Ltd still trading?
Cyiops 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 Cyiops Ltd do?
Cyiops Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Architectural activities (SIC 71111); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Cyiops Ltd?
Cyiops Ltd was incorporated on 16 December 2019, 6 years ago.
Who runs Cyiops Ltd?
Cyiops Ltd has 1 active director, the longest-serving appointed in Dec 2019. Their names and service addresses are on the Companies House register.
Who owns Cyiops Ltd?
One person or company has significant control of Cyiops Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Cyiops 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 Cyiops 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.