A.I. TONNAR LIMITED

🌳Matureactive
SC221253 · ltd · incorporated 2001-07-16
Investment thesis
Property vehicle with a workable charge structure — clean refinance potential.
Why interesting: Asset-backed; value largely in underlying property; lender engagement likely possible.
Why risky: Dependent on title and valuation due diligence; standard property risks.
🔒Estimated value
—
Upgrade to see
Turnover
—
year to Mar 2025
Net worth
£264.5k
book net assets
Opportunity
82/100
Exceptional
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What this business does
Primary activity: Construction of commercial buildings
Sector: Construction
ALSO REGISTERED FOR
  • 41202Construction of domestic buildings
Investor take
Pursue
Active trading company with a 68-year-old founder — textbook succession opportunity.

Opportunity 82/100 (exceptional), bankability 80/100. Strong seller-intent signal (83/100, director aged 68). Share purchase looks the cleaner deal structure. Biggest value-creation lever: Discharge stale live charges. 1 live charge(s) created 15+ years ago — likely paid but undischarged. Clean register. Most likely exit: share sale to pe / searcher (65/100).

🏦

Refinance opportunity

1 live charge · oldest 19.1y

45/100
under pressure

Refinance would be pressure-driven, not opportunity-driven. Expect tighter margins and covenant scrutiny.

  • · Oldest live charge is 19.1 years old — likely at or near maturity.
  • · Single lender — cleanest path to refinance.
  • · Cashflow trend is negative — lender view likely cautious.

Data confidence

Overall: medium (77/100)

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

Company profile
address, 2 SIC codes, incorporation date
100
Financials
2 years of iXBRL accounts extracted (YoY deltas available) + narrative notes parsed
75
Lenders & charges
1 charges (1/1 with lender, 1/1 with type)
90
Directors & officers
7 officers (3 active, 7 linked, 4 with DOB)
81
Ownership & PSC
2 active PSC(s) of 2 total, 2 with control declared
90
Director network
Network not yet resolved
30
Filing history
68 filings on record
85
Gazette notices
No matching gazette notices (standard for active companies)
60
Opportunity Score
82/100Exceptional
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
100
Good data coverage for analysis.

Signals from accounts

Derived from iXBRL accounts · accounting standard not declared
Positive net assets
Net assets £264,534
Net assets shrinking
Down £60,500 YoY
Cash YoY
-22%
Year on year

Key financials

2 years extracted from filed iXBRL accounts
Cash
£215k
↓ 22% YoY
Net Worth
£265k
↓ 19% YoY
Current Assets
£238k
↓ 15% YoY
Current Liabilities
—
£0£65k£130k£195k£260k£325kMar 2024Mar 2025

Hover to see exact values · click legend to toggle series

Financials

Extracted from Companies House accounts · accounting standard unknown
Metric2025-03-312024-03-31
Total assets£281.0k£345.2k
Current assets£238.5k£281.7k
Cash£214.5k£274.7k
Debtors£23.9k£7.1k
Net assets£264.5k£325.0k

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

🔒Filing-note intelligence

1 signal detected in this company's narrative notes — going-concern language, audit opinion, contingent liabilities, related-party transactions.

Available from the Pro tier upwards.

See pricing →

Recent activity

Last 30 days
0
filings
Last 90 days
0
filings
Last 180 days
1
filing
  • • 1 accounts
Counts from Companies House filing history.
Corporate timeline (28 events)Click to expand
  1. 2025-12-22
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  2. 2024-12-13
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  3. 2024-07-23
    📄
    change-to-a-person-with-significant-control
    persons-with-significant-control · PSC04
  4. 2023-12-27
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  5. 2022-12-28
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  6. 2022-07-25
    📄
    notification-of-a-person-with-significant-control
    persons-with-significant-control · PSC01
  7. 2021-12-24
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  8. 2020-12-31
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  9. 2019-10-25
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  10. 2019-01-03
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  11. 2017-12-29
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  12. 2016-12-30
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  13. 2016-01-08
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  14. 2015-08-09
    📄
    annual-return-company-with-made-up-date-full-list-shareholders
    annual-return · AR01
  15. 2015-01-05
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  16. 2007-03-26
    🔒
    Charge registered #1
    Lender: Clydesdale Bank Public Limited Company
  17. 2006-08-11
    ➖
    TONNAR, Alexander Innes resigned
    director
  18. 2002-10-31
    ➖
    MCCARTHY, Paul resigned
    director
  19. 2001-07-16
    🏢
    Company incorporated
    As A.I. TONNAR LIMITED
  20. 2001-07-16
    ➕
    KERR, Colin appointed
    secretary
  21. 2001-07-16
    ➕
    KERR, Colin appointed
    director
  22. 2001-07-16
    ➕
    THOMSON, Thomas Spencer appointed
    director
  23. 2001-07-16
    ➕
    OSWALDS OF EDINBURGH LIMITED appointed
    corporate-nominee-secretary
  24. 2001-07-16
    ➖
    OSWALDS OF EDINBURGH LIMITED resigned
    corporate-nominee-secretary
  25. 2001-07-16
    ➕
    MCCARTHY, Paul appointed
    director
  26. 2001-07-16
    ➕
    TONNAR, Alexander Innes appointed
    director
  27. 2001-07-16
    ➕
    JORDANS (SCOTLAND) LIMITED appointed
    corporate-nominee-director
  28. 2001-07-16
    ➖
    JORDANS (SCOTLAND) LIMITED resigned
    corporate-nominee-director

Owner dependency

83/100
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
  • +Two-director setup: Only two active directors — typical of owner-managed SMEs but limits succession.
  • +Long-tenure founder: Senior director has been in place 25 years — deep operational knowledge concentrated in one person.
  • +Founder age: Director aged approximately 68 — succession pressure is live.

Succession & seller-readiness

86/100
Likely off-market candidate

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

SIGNALS
  • primaryFounder aged 63+: Senior director is approximately 68. Approaching typical UK retirement age — succession thinking likely.
  • secondaryTwo-director governance: Small-team governance. Succession depth is thin but not absent.
  • primary20+ year tenure: Director in role 25 years. Very long tenure is a classic succession signal.
  • secondaryStable-but-static management: Company is 25 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 Thomas Spencer Thomson
Individual · British · DOB 05/1966 · age 60
25–50%
25–50%25-50% shares · 25-50% voting25/07/2022
Mr Colin Kerr
Individual · British · DOB 08/1958 · age 68
25–50%
25–50%25-50% shares · 25-50% voting16/07/2016

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

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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
Incorporated2001-07-16
Jurisdictionscotland
Primary SIC41201 — Construction of commercial buildings

Registered office

8 Highfields Road
Annan
Dumfries & Galloway
DG12 5LQ

Filing status

Accounts
Next due: 2026-12-31
Last made up to: 2025-03-31
Confirmation statement
Next due: 2026-07-30
Last: 2025-07-16

Officers (3 active · 4 resigned)

KERR, Colin→
secretary · appointed 2001-07-16
View their other companies + combined net worth →
Active
KERR, Colin→
director · ~68y · appointed 2001-07-16
View their other companies + combined net worth →
Active
THOMSON, Thomas Spencer→
director · ~60y · appointed 2001-07-16
View their other companies + combined net worth →
Active
OSWALDS OF EDINBURGH LIMITED→
corporate-nominee-secretary · appointed 2001-07-16 · resigned 2001-07-16
Resigned
MCCARTHY, Paul→
director · ~55y · appointed 2001-07-16 · resigned 2002-10-31
Resigned
TONNAR, Alexander Innes→
director · ~77y · appointed 2001-07-16 · resigned 2006-08-11
Resigned
JORDANS (SCOTLAND) LIMITED→
corporate-nominee-director · appointed 2001-07-16 · resigned 2001-07-16
Resigned

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

Mortgages & charges

1
Total charges
1
Outstanding
1
Active lenders
Status:Lender:1 of 1 shown
TypeProperties
outstanding
Virgin Money
Clydesdale Bank Public Limited Company
Floating charge1 property26/03/2007—
Click column headers to sort. Use filters above to narrow by status and lender.

Recent filings (68 total)

accounts-with-accounts-type-total-exemption-full
accounts · AA
2025-12-22
confirmation-statement-with-no-updates
confirmation-statement · CS01
2025-07-24
accounts-with-accounts-type-total-exemption-full
accounts · AA
2024-12-13
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-07-23
change-to-a-person-with-significant-control
persons-with-significant-control · PSC04
2024-07-23
accounts-with-accounts-type-total-exemption-full
accounts · AA
2023-12-27
confirmation-statement-with-no-updates
confirmation-statement · CS01
2023-07-19
accounts-with-accounts-type-total-exemption-full
accounts · AA
2022-12-28
notification-of-a-person-with-significant-control
persons-with-significant-control · PSC01
2022-07-25
confirmation-statement-with-no-updates
confirmation-statement · CS01
2022-07-22
accounts-with-accounts-type-total-exemption-full
accounts · AA
2021-12-24
confirmation-statement-with-no-updates
confirmation-statement · CS01
2021-07-28
accounts-with-accounts-type-total-exemption-full
accounts · AA
2020-12-31
confirmation-statement-with-no-updates
confirmation-statement · CS01
2020-08-11
accounts-with-accounts-type-total-exemption-full
accounts · AA
2019-10-25