Ksen Ltd
- Company number
- 16981653
- Incorporated
- 22 Jan 2026
- Registered office
- 399-405 Office 358 Unit 5, Oxford Street, London, W1C 2BU
- Nature of business
- Other specialised construction activities n.e.c.; Non-specialised wholesale trade; Temporary employment agency activities
Ksen Ltd is a newly incorporated private limited company registered in London, company number 16981653, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 22 October 2027, and its first CT600 is due at HMRC on 21 January 2028.
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 Ksen Ltd is registered
The registered office is in London (W1C), in the Westminster local authority area, London. Show W1C 2BU on a map.
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What happens if Ksen 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 22 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Oct 2027 to 22 Nov 2027 | £150 |
| 1 to 3 months late | 23 Nov 2027 to 22 Jan 2028 | £375 |
| 3 to 6 months late | 23 Jan 2028 to 22 Apr 2028 | £750 |
| More than 6 months late | From 23 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 16981653
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 January 2026
- Registered office
- 399-405 Office 358 Unit 5, Oxford Street, London, W1C 2BU
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Non-specialised wholesale trade (SIC 46900)
Temporary employment agency activities (SIC 78200) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 8 May 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Ksga Construction Ltd2022
- KSK Design Ee Limited2020
- KSS Refurbishment Ltd2026
- KTB Lifting Ltd2025
- KTF Builders and Maintenance Limited2006
- Kudamjoe Construction Limited2012
- Kudos Construction Services Limited2018
- Kudos Fire Protection Services Limited2023
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Ksen Ltd's accounts due?
Ksen Ltd's next accounts are due at Companies House by 22 October 2027 (in 374 days), covering the period to 31 January 2027.
When is Ksen 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 21 January 2027, due by 21 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ksen Ltd still trading?
Ksen 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 Ksen Ltd do?
Ksen Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Non-specialised wholesale trade (SIC 46900); Temporary employment agency activities (SIC 78200).
How old is Ksen Ltd?
Ksen Ltd was incorporated on 22 January 2026, less than a year ago.
What is the penalty if Ksen 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 Ksen 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.