£1
No changevs Apr 2025Active10147695Private limited companyLondon
CASTELLUM LTD
Significant control: Alchemy Tax LLP (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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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What does Castellum Ltd sell?
Registered activity: Dormant Company (SIC 99999). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
CASTELLUM LTD is an active private limited company (company number 10147695) incorporated on 26 April 2016, registered in London. Its registered activity is dormant company (SIC 99999). Latest dormant accounts cover the period ending 30 April 2026, showing net assets of £1, with 1 employee on average. Net assets were unchanged on the prior period.
Peer position · net assets
By net assets it sits in the lower half of 12,997 comparable companies in London (median £4, upper quartile £100).
02
Ownership and control
- Alchemy Tax Llp
- owns 75–100% of shares
- Mr Frank Cross
- owns 75–100% of shares
- Castellum Llc
- owns 75–100% of shares
- Mr Frank Cross
- owns 75–100% of shares
- holds 75–100% of voting rights
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
- 26 April 201610 yrs ago
- Next accounts due
- 30 January 2028in 463 days
- Confirmation statement due
- 10 May 2027in 198 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 99999
- Dormant Company
- Accounts type
- Dormant
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not reported
1
No changevs Apr 2025| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 April 2026 | £1 | — | — | — | — | — | 1 |
| 30 April 2025 | £1 | — | — | — | — | — | 1 |
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 £1 at 30 April 2026
- Incorporated five or more years agoIncorporated 26 April 2016
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
- Next accounts duein 463 days
- Confirmation statement duein 198 days
- Accounts period endNet assets £1 · dormant accounts
- Accounts period endNet assets £1 · dormant accounts
- Incorporated
08
Similar companies in London
- MANNICE GROUP LIMITEDHammersmith · inc. Apr 2016
- TAKEPASS LTDLondon · inc. Apr 2016
- AMENITY PROPERTY (WALMLEY CROFT SUTTON COLDFIELD) LIMITEDLondon · inc. Apr 2016
- BLOSSIER COMPANY LIMITEDLondon · inc. Apr 2016
- MORTON MORRIS & COMPANY LIMITEDLondon · inc. Apr 2016
- QJM LIMITEDLondon · inc. Apr 2016
All companies incorporated on 26 April 2016 · in Apr 2016.
09
Reminders for CASTELLUM LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.