£265k
+240%vs Jun 2024Active13460988Private limited companyLondon
CSST LIMITED
Significant control: Daniel Kostkowski (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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Registered activity: Construction of domestic buildings (SIC 41202). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
CSST LIMITED is an active private limited company (company number 13460988) incorporated on 16 June 2021, registered in London. Its registered activity is construction of domestic buildings (SIC 41202). Latest small accounts cover the period ending 30 June 2025, showing net assets of £265k and cash of £265k, with 1 employee on average. Net assets rose 240% on the prior period (£78k).
Peer position · net assets
By net assets it sits in the top quarter of 5,020 comparable companies in London (median £1,956, upper quartile £20k).
02
Ownership and control
- Mr Daniel Kostkowski
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 16 June 20215 yrs ago
- Next accounts due
- 30 March 2027in 158 days
- Confirmation statement due
- 30 June 2027in 250 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 41202
- Construction of domestic buildings
- SIC 43290
- Other construction installation
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£265k
+460%vs Jun 2024Not reported
1
No changevs Jun 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 June 2025 | £265k | £265k | £131k | — | — | — | 1 |
| 30 June 2024 | £78k | £47k | £50k | — | — | — | 1 |
Cash per employee£265kCash ÷ average employees
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
06
Filing and accounts signals
- Net assets above zeroNet assets £265,487 at 30 June 2025
- Net assets up 10% or more on the prior period+239.9% vs prior period
- Cash at bank of £50,000 or moreCash £265,202
- Incorporated five or more years agoIncorporated 16 June 2021
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Confirmation statement duein 250 days
- Next accounts duein 158 days
- Accounts period endNet assets £265k · small accounts
- Accounts period endNet assets £78k · small accounts
- Incorporated
08
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- ARW DEVELOPMENTS LTDLondon · inc. Jun 2021
All companies incorporated on 16 June 2021 · in Jun 2021.
09
Reminders for CSST LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.