CALSON LTD

💤Zombieactive
SC383834 · ltd · incorporated 2010-08-17
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 Aug 2024
Net worth
—
book net assets
Opportunity
75/100
Strong
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What this business does
Primary activity: Engineering related scientific and technical consulting activities
Sector: Professional, scientific & technical
ALSO REGISTERED FOR
  • 72190Other research and experimental development on natural sciences and engineering
  • 99999SIC 99999
Investor take
Pursue
Strong opportunity: active trading company with strong profile and bankable structure.

Opportunity 75/100 (strong), bankability 75/100. High owner-dependency — earn-out structure likely required for clean transition. 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 (58/100).

Data confidence

Overall: high (80/100)

Strong data coverage across all sections. AI outputs should be trusted with minimal caveats.

Company profile
address, 3 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
1 officers (1 active, 1 linked, 1 with DOB)
90
Ownership & PSC
1 active PSC(s) of 1 total, 1 with control declared
90
Director network
2 connected companies via shared directors
51
Filing history
31 filings on record
85
Gazette notices
No matching gazette notices (standard for active companies)
60
Opportunity Score
75/100Strong
PassWatchWorth a lookStrongExceptional 

Solid opportunity signal. Worth a dedicated memo and management meeting.

Business quality
70
Active, clean filings, stable charge profile.
Acquirability
60
Some acquirability indicators.
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£0Aug 2023Aug 2024

Hover to see exact values · click legend to toggle series

Financials

Extracted from Companies House accounts · accounting standard unknown
Metric2024-08-312023-08-31

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

Recent activity

Last 30 days
0
filings
Last 90 days
0
filings
Last 180 days
0
filings
Counts from Companies House filing history.
Corporate timeline (17 events)Click to expand
  1. 2025-05-26
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  2. 2024-05-22
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  3. 2023-05-29
    📄
    accounts-with-accounts-type-dormant
    accounts · AA
  4. 2022-05-25
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  5. 2021-05-28
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  6. 2020-05-18
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  7. 2019-05-24
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  8. 2018-05-13
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  9. 2017-05-09
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  10. 2017-02-18
    📍
    change-registered-office-address-company-with-date-old-address-new-address
    address · AD01
  11. 2016-05-15
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  12. 2015-08-31
    📄
    annual-return-company-with-made-up-date-full-list-shareholders
    annual-return · AR01
  13. 2015-05-25
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  14. 2014-08-31
    📄
    annual-return-company-with-made-up-date-full-list-shareholders
    annual-return · AR01
  15. 2014-04-13
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  16. 2010-08-17
    🏢
    Company incorporated
    As CALSON LTD
  17. 2010-08-17
    ➕
    WILSON, Callum Ross, Dr appointed
    director

Owner dependency

90/100
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 16 years — deep operational knowledge concentrated in one person.
  • +No director turnover: Company is 16 years old with no director changes — suggests a very tight-knit founder team never broadened.

Succession & seller-readiness

68/100
Strong succession signal

Multiple signals suggest succession is on the horizon. Candidate for proactive outreach.

SIGNALS
  • primarySole active director: Only one director in control. No visible successor — buyers solve the succession problem.
  • secondary12+ year tenure: Director in role 16 years.
  • secondaryStable-but-static management: Company is 16 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

1 active beneficial owner · dominant holder ≥75%
NameSharesVoting rightsNature of controlNotified
Dr Callum Ross Wilson
Individual · British · DOB 11/1974 · age 52
75–100%
75–100%75-100% shares · 75-100% voting06/04/2016

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
Typeltd
Incorporated2010-08-17
Jurisdictionscotland
Primary SIC71122 — Engineering related scientific and technical consulting activities

Registered office

24 Lindsay Row
Rosewell
Midlothian
EH24 9EJ
Scotland

Filing status

Accounts
Next due: 2026-05-31
Last made up to: 2024-08-31
Confirmation statement
Next due: 2026-08-31
Last: 2025-08-17

Officers (1 active · 0 resigned)

WILSON, Callum Ross, Dr→
director · ~52y · appointed 2010-08-17
View their other companies + combined net worth →
Active

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

Recent filings (31 total)

confirmation-statement-with-updates
confirmation-statement · CS01
2025-08-21
accounts-with-accounts-type-dormant
accounts · AA
2025-05-26
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-08-19
accounts-with-accounts-type-dormant
accounts · AA
2024-05-22
confirmation-statement-with-no-updates
confirmation-statement · CS01
2023-08-28
accounts-with-accounts-type-dormant
accounts · AA
2023-05-29
confirmation-statement-with-no-updates
confirmation-statement · CS01
2022-08-24
accounts-with-accounts-type-micro-entity
accounts · AA
2022-05-25
confirmation-statement-with-no-updates
confirmation-statement · CS01
2021-08-23
accounts-with-accounts-type-micro-entity
accounts · AA
2021-05-28
confirmation-statement-with-no-updates
confirmation-statement · CS01
2020-08-24
accounts-with-accounts-type-micro-entity
accounts · AA
2020-05-18
confirmation-statement-with-no-updates
confirmation-statement · CS01
2019-08-21
accounts-with-accounts-type-micro-entity
accounts · AA
2019-05-24
confirmation-statement-with-no-updates
confirmation-statement · CS01
2018-08-20