121 CASTELNAU MANAGEMENT LIMITED

💤Zombieactive
03983416 · private-limited-guarant-nsc · incorporated 2000-04-28
Investment thesis
Zombie company — trading but stalled; unlikely mover.
Why interesting: Quiet, steady; could be a succession or carve-out candidate with the right conversation.
Why risky: No growth signal; thin margin for error on price.
🔒Estimated value
—
Upgrade to see
Turnover
—
year to Apr 2025
Net worth
—
book net assets
Opportunity
80/100
Exceptional
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What this business does
Primary activity: Other letting and operating of own or leased real estate
Sector: Real estate
Investor take
Pursue
Active trading company with a 62-year-old founder — textbook succession opportunity.

Opportunity 80/100 (exceptional), bankability 75/100. Strong seller-intent signal (70/100, director aged 62). Share purchase looks the cleaner deal structure. Biggest value-creation lever: Broaden director team. Sole director creates succession risk and reduces buyer comfort. Appoint a second director or strong #2. Most likely exit: share sale to pe / searcher (73/100).

Data confidence

Overall: medium (78/100)

Adequate coverage. AI outputs are reliable for the sections scored high; verify the rest in diligence.

Company profile
address, 1 SIC codes, incorporation date
100
Financials
2 years of iXBRL accounts extracted (YoY deltas available) + narrative notes parsed
75
Lenders & charges
Confirmed no charges registered
85
Directors & officers
9 officers (2 active, 9 linked, 6 with DOB)
83
Ownership & PSC
2 active PSC(s) of 2 total, 2 with control declared
90
Director network
1 connected companies via shared directors
48
Filing history
67 filings on record
85
Gazette notices
No matching gazette notices (standard for active companies)
60
Opportunity Score
80/100Exceptional
PassWatchWorth a lookStrongExceptional 

Strong composite across quality, acquirability, and risk. High-priority target — progress to serious diligence.

Business quality
70
Active, clean filings, stable charge profile.
Acquirability
80
Strong succession / seller-readiness signals.
Risk profile
85
Few red flags.
Signal strength
90
Good data coverage for analysis.

Key financials

2 years extracted from filed iXBRL accounts
Cash
—
Net Worth
—
Current Assets
—
Current Liabilities
—
£0£0£0£0£0£0Apr 2024Apr 2025

Hover to see exact values · click legend to toggle series

Financials

Extracted from Companies House accounts · FRS 102
Metric2025-04-302024-04-30

Amounts extracted automatically from iXBRL. Fields left blank were not reported or not mapped. Values in GBP unless stated.

Recent activity

Last 30 days
1
filing
  • • 1 confirmation-statement
Last 90 days
1
filing
  • • 1 confirmation-statement
Last 180 days
2
filings
  • • 1 confirmation-statement
  • • 1 accounts
Counts from Companies House filing history.
Corporate timeline (32 events)Click to expand
  1. 2026-01-09
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  2. 2025-01-09
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  3. 2024-11-01
    📄
    termination-director-company-with-name-termination-date
    officers · TM01
  4. 2024-10-20
    ➖
    FUSTOK, Malec resigned
    director
  5. 2024-01-17
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  6. 2023-01-17
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  7. 2022-03-01
    📍
    change-registered-office-address-company-with-date-old-address-new-address
    address · AD01
  8. 2022-02-21
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  9. 2021-05-05
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  10. 2020-01-07
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  11. 2019-04-30
    ➖
    KARPELES-SCHENKER, Cynthia resigned
    director
  12. 2019-04-30
    📄
    termination-director-company-with-name-termination-date
    officers · TM01
  13. 2019-01-23
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  14. 2018-01-15
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  15. 2017-01-30
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  16. 2016-04-26
    📄
    annual-return-company-with-made-up-date-no-member-list
    annual-return · AR01
  17. 2016-02-05
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  18. 2005-03-08
    ➖
    HARRIS, Lynda resigned
    director
  19. 2004-04-16
    ➕
    FUSTOK, Malec appointed
    director
  20. 2004-04-15
    ➖
    SNUDDEN, Lyn resigned
    director
  21. 2001-08-01
    ➕
    MULLINER, Fiona appointed
    secretary
  22. 2001-08-01
    ➕
    MULLINER, Fiona appointed
    director
  23. 2001-06-29
    ➖
    SWAIN, Heather resigned
    secretary
  24. 2001-06-29
    ➖
    SWAIN, Heather resigned
    director
  25. 2000-04-28
    🏢
    Company incorporated
    As 121 CASTELNAU MANAGEMENT LIMITED
  26. 2000-04-28
    ➕
    SWAIN, Heather appointed
    secretary
  27. 2000-04-28
    ➕
    SWIFT INCORPORATIONS LIMITED appointed
    corporate-nominee-secretary
  28. 2000-04-28
    ➖
    SWIFT INCORPORATIONS LIMITED resigned
    corporate-nominee-secretary
  29. 2000-04-28
    ➕
    HARRIS, Lynda appointed
    director
  30. 2000-04-28
    ➕
    KARPELES-SCHENKER, Cynthia appointed
    director
  31. 2000-04-28
    ➕
    SNUDDEN, Lyn appointed
    director
  32. 2000-04-28
    ➕
    SWAIN, Heather appointed
    director

Owner dependency

93/100
Critical — business is the founder

The business appears inseparable from the founder. Acquisition without a serious earn-out or meaningful transition period would likely destroy value.

FACTORS
  • +Sole director: Only one active director — all governance concentrated on one person.
  • +Long-tenure founder: Senior director has been in place 25 years — deep operational knowledge concentrated in one person.
  • +Senior director age: Director aged approximately 62 — approaching natural succession window.

Succession & seller-readiness

85/100
Likely off-market candidate

Strong acquirability signals converging. Worth approaching directly — this is how off-market deals start.

SIGNALS
  • secondaryFounder aged 58+: Senior director is approximately 62. Early succession window.
  • primarySole active director: Only one director in control. No visible successor — buyers solve the succession problem.
  • primary20+ year tenure: Director in role 25 years. Very long tenure is a classic succession signal.
  • secondaryStable-but-static management: Company is 26 years old and no new directors in the last 3 years — succession not yet being planned internally.
  • supportingClean filings + long tenure: Disciplined long-tenure operator — classic lifestyle-business pattern that often sells quietly.

Red flags

clean
No red flags detected from available public data. (This is not a clean bill of health — detailed accounts review still recommended.)

Shareholders & ownership

2 active beneficial owners
NameSharesVoting rightsNature of controlNotified
Mr Anthony John Benedict Mulliner
Individual · British · DOB 05/1957 · age 69
25–50%
—25-50% shares06/04/2016
Mrs Fiona Gillian Mulliner
Individual · British · DOB 03/1964 · age 62
25–50%
—25-50% shares06/04/2016

From Companies House Persons with Significant Control filings. Share ranges are banded per the public PSC regime.

🔒Co-director network graph

Radial SVG graph showing every company connected via shared directors, colour-coded by status.

Available from the Pro tier upwards.

See pricing →

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Peers ranked by estimated value, then turnover, then opportunity score.See all →
🔒Tailored diligence questions

7 specific questions generated from this company's actual signals — liquidity, leverage, director age, charge count, red flags, age-of-company.

Available from the Pro tier upwards.

See pricing →
🔒Advanced scoring suite

Exit-route ranking, improvement thesis, quiet-distress detector, covenant-pressure proxy, extraction monitor, approaching triggers, ownership drift, local cluster, value trap, debt capacity, archetype classification — 48+ scoring modules.

Available from the Pro tier upwards.

See pricing →

Company details

Statusactive
Typeprivate-limited-guarant-nsc
Incorporated2000-04-28
Jurisdictionengland-wales
Primary SIC68209 — Other letting and operating of own or leased real estate

Registered office

Wheelbarrow Castle
Barton-On-The-Heath
Moreton-In-Marsh
GL56 0PR
England

Filing status

Accounts
Next due: 2027-01-31
Last made up to: 2025-04-30
Confirmation statement
Next due: 2027-05-06
Last: 2026-04-22

Officers (2 active · 7 resigned)

MULLINER, Fiona→
secretary · appointed 2001-08-01
View their other companies + combined net worth →
Active
MULLINER, Fiona→
director · ~62y · appointed 2001-08-01
View their other companies + combined net worth →
Active
SWAIN, Heather→
secretary · appointed 2000-04-28 · resigned 2001-06-29
Resigned
SWIFT INCORPORATIONS LIMITED→
corporate-nominee-secretary · appointed 2000-04-28 · resigned 2000-04-28
Resigned
FUSTOK, Malec→
director · ~56y · appointed 2004-04-16 · resigned 2024-10-20
Resigned
HARRIS, Lynda→
director · ~88y · appointed 2000-04-28 · resigned 2005-03-08
Resigned
KARPELES-SCHENKER, Cynthia→
director · ~103y · appointed 2000-04-28 · resigned 2019-04-30
Resigned
SNUDDEN, Lyn→
director · ~63y · appointed 2000-04-28 · resigned 2004-04-15
Resigned
SWAIN, Heather→
director · ~72y · appointed 2000-04-28 · resigned 2001-06-29
Resigned

Click a director name to see their full track record across all companies.

Recent filings (67 total)

confirmation-statement-with-no-updates
confirmation-statement · CS01
2026-04-29
accounts-with-accounts-type-dormant
accounts · AA
2026-01-09
confirmation-statement-with-no-updates
confirmation-statement · CS01
2025-05-02
accounts-with-accounts-type-dormant
accounts · AA
2025-01-09
termination-director-company-with-name-termination-date
officers · TM01
2024-11-01
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-04-29
accounts-with-accounts-type-dormant
accounts · AA
2024-01-17
confirmation-statement-with-no-updates
confirmation-statement · CS01
2023-05-03
accounts-with-accounts-type-dormant
accounts · AA
2023-01-17
confirmation-statement-with-no-updates
confirmation-statement · CS01
2022-04-28
change-registered-office-address-company-with-date-old-address-new-address
address · AD01
2022-03-01
accounts-with-accounts-type-dormant
accounts · AA
2022-02-21
accounts-with-accounts-type-dormant
accounts · AA
2021-05-05
confirmation-statement-with-no-updates
confirmation-statement · CS01
2021-05-05
confirmation-statement-with-no-updates
confirmation-statement · CS01
2020-05-04