- Company number
- 12936056
- Incorporated
- 7 Oct 20206 years trading
- Registered office
- 5TH Floor, 37 High Holborn, London, WC1V 6AA
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Csky Services Limited is a 6-year-old private limited company registered in London, company number 12936056, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 £184 (+10.3%) on the year before, to £1,962.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £3,661 against £1,699 owed within a year: 2.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £1,962 | £3,661 | £1,699 | 1 | |
| 31 Oct 2023 | £1,778 | £6,151 | £4,373 | 1 | |
| 31 Oct 2022 | -£269 | £18 | £287 | 0 | |
| 31 Oct 2021 | -£269 | £18 | £287 | 0 |
Who runs and owns Csky Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| J*** N*** | Director | Oct 2020 |
Person with significant control
Where Csky Services Limited is registered
The registered office is in London (WC1V), in the Camden local authority area, London. Show WC1V 6AA on a map.
Other trade companies in WC1V
- SWM Construction LtdInstallers
- LHS Property Holdings LtdProperty developers
- Fouretta LimitedProperty developers
- Ditus Group LtdBuilders
- Naseby One LimitedCivil engineering
- Oceana Developments LimitedProperty developers
- Dengie Marshes Wind Farm LimitedCivil engineering
- Welford Wind Farm LimitedCivil engineering
Also registered at this address
5 other companies use the same registered office as Csky Services Limited.
- Escrillon Properties LimitedProperty developers
- Invel Investment LimitedProperty developers
- London & Berkshire Estates LimitedProperty developers
- Summerthorne Estates LimitedProperty developers
- SWM Construction LtdInstallers
What happens if Csky Services Limited 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 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
- 12936056
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2020 (6 years ago)
- Registered office
- 5TH Floor, 37 High Holborn, London, WC1V 6AA
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 6 October 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- CSS Building Services Ltd2024
- CSST Limited2021
- CST Maintenance Ltd2023
- CSV Contruction Ltd2026
- CSW Specialists Limited2026
- CT Remedials Ltd2026
- CTS Elite Paving & Landscaping Ltd2026
- CTS Joiners Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Csky Services Limited's accounts due?
Csky Services Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Csky Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, 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 Csky Services Limited still trading?
Csky Services Limited 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 Csky Services Limited do?
Csky Services Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Csky Services Limited?
Csky Services Limited was incorporated on 7 October 2020, 6 years ago.
Who runs Csky Services Limited?
Csky Services Limited has 1 active director, the longest-serving appointed in Oct 2020. Their names and service addresses are on the Companies House register.
Who owns Csky Services Limited?
One person or company has significant control of Csky Services Limited: an individual (owns 75% or more of the shares).
What is the penalty if Csky Services Limited 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 Csky Services Limited 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.