DOON VALLEY (HEAT TREATMENT) LIMITED

🌳Matureactive
SC106571 · ltd · incorporated 1987-09-11
Investment thesis
Well-run mature business — low negotiation leverage; premium likely.
Why interesting: Textbook target; clean filings, stable trading.
Why risky: No pressure on seller; any deal likely at full price.
Opportunity decay
hardening · 12-months
Already tight — no obvious softening catalysts on the horizon.
  • · Thesis: well-run, low negotiation leverage
🔒Estimated value
—
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Turnover
—
year to Mar 2025
Net worth
£1.26M
book net assets
Opportunity
81/100
Exceptional
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What this business does
Primary activity: Other engineering activities
Sector: Professional, scientific & technical
Investor take
Pursue
Strong opportunity: asset-holding vehicle with exceptional profile and bankable structure.

Opportunity 81/100 (exceptional), bankability 75/100. High owner-dependency — earn-out structure likely required for clean transition. Share purchase looks the cleaner deal structure. Most likely exit: share sale to pe / searcher (65/100).

Data confidence

Overall: medium (79/100)

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
6 officers (4 active, 6 linked, 4 with DOB)
83
Ownership & PSC
1 active PSC(s) of 1 total, 1 with control declared
90
Director network
3 connected companies via shared directors
54
Filing history
100 filings on record
85
Gazette notices
No matching gazette notices (standard for active companies)
60
Opportunity Score
81/100Exceptional
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
85
Strong succession / seller-readiness signals.
Risk profile
85
Few red flags.
Signal strength
90
Good data coverage for analysis.

Signals from accounts

Derived from iXBRL accounts · accounting standard not declared
Positive net assets
Net assets £1,264,261
Net assets shrinking
Down £345,721 YoY
Cash YoY
-28%
Year on year

Key financials

2 years extracted from filed iXBRL accounts
Cash
£376k
↓ 28% YoY
Net Worth
£1.3m
↓ 21% YoY
Current Assets
£1.1m
↓ 24% YoY
Current Liabilities
—
£0£322k£644k£966k£1.3m£1.6mMar 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£1.26M£1.61M
Current assets£1.11M£1.46M
Cash£375.8k£522.6k
Debtors£598.5k£755.8k
Net assets£1.26M£1.61M

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
2
filings
  • • 1 confirmation-statement
  • • 1 officers
Last 180 days
3
filings
  • • 1 confirmation-statement
  • • 1 officers
  • • 1 accounts
Counts from Companies House filing history.
Corporate timeline (21 events)Click to expand
  1. 2026-03-04
    📄
    change-person-director-company-with-change-date
    officers · CH01
  2. 2025-12-23
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  3. 2024-12-11
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  4. 2023-12-15
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  5. 2022-12-16
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  6. 2021-12-22
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  7. 2020-12-01
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  8. 2020-01-10
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  9. 2018-10-29
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  10. 2017-11-27
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  11. 2016-10-31
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  12. 2015-12-11
    📄
    accounts-with-accounts-type-total-exemption-small
    accounts · AA
  13. 2015-10-08
    📄
    annual-return-company-with-made-up-date-full-list-shareholders
    annual-return · AR01
  14. 2015-05-15
    📍
    change-registered-office-address-company-with-date-old-address-new-address
    address · AD01
  15. 2013-03-01
    ➕
    HOUSTON, Maxine appointed
    director
  16. 2013-02-01
    ➕
    BAILLIE, Yvonne appointed
    director
  17. 2001-10-31
    ➖
    MILLER, William resigned
    director
  18. 2001-10-01
    ➕
    BAILLIE, Yvonne appointed
    secretary
  19. 2001-10-01
    ➕
    HOUSTON, Steven William appointed
    director
  20. 2001-10-01
    ➖
    MILLER, Margaret resigned
    secretary
  21. 1987-09-11
    🏢
    Company incorporated
    As DOON VALLEY (HEAT TREATMENT) LIMITED

Owner dependency

76/100
High — earn-out structure required

Material founder dependency. Consider a 2-3 year earn-out and build in a handover plan before completion.

FACTORS
  • +Long-tenure founder: Senior director has been in place 25 years — deep operational knowledge concentrated in one person.
  • +Senior director age: Director aged approximately 63 — approaching natural succession window.
  • +Family involvement: Multiple officers share a surname — likely family business, which concentrates governance.

Succession & seller-readiness

80/100
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 63. Approaching typical UK retirement age — succession thinking likely.
  • primary20+ year tenure: Director in role 25 years. Very long tenure is a classic succession signal.
  • secondaryStable-but-static management: Company is 39 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
NameSharesVoting rightsNature of controlNotified
Mrs Maxine Houston
Individual · British · DOB 12/1968 · age 58
50–75%
—50-75% shares30/06/2016

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

6 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
Incorporated1987-09-11
Jurisdictionscotland
Primary SIC71129 — Other engineering activities

Registered office

The Alhambra Suite 4th Floor
82 Mitchell Street
Glasgow
G1 3NA

Filing status

Accounts
Next due: 2026-12-31
Last made up to: 2025-03-31
Confirmation statement
Next due: 2026-12-06
Last: 2025-11-22

Officers (4 active · 2 resigned)

BAILLIE, Yvonne→
secretary · appointed 2001-10-01
View their other companies + combined net worth →
Active
BAILLIE, Yvonne→
director · ~63y · appointed 2013-02-01
View their other companies + combined net worth →
Active
HOUSTON, Maxine→
director · ~58y · appointed 2013-03-01
View their other companies + combined net worth →
Active
HOUSTON, Steven William→
director · ~60y · appointed 2001-10-01
View their other companies + combined net worth →
Active
MILLER, Margaret→
secretary · resigned 2001-10-01
Resigned
MILLER, William→
director · ~85y · resigned 2001-10-31
Resigned

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

Recent filings (100 total)

confirmation-statement-with-no-updates
confirmation-statement · CS01
2026-03-05
change-person-director-company-with-change-date
officers · CH01
2026-03-04
accounts-with-accounts-type-total-exemption-full
accounts · AA
2025-12-23
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-12-20
accounts-with-accounts-type-total-exemption-full
accounts · AA
2024-12-11
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-01-17
accounts-with-accounts-type-total-exemption-full
accounts · AA
2023-12-15
confirmation-statement-with-no-updates
confirmation-statement · CS01
2023-01-04
accounts-with-accounts-type-total-exemption-full
accounts · AA
2022-12-16
confirmation-statement-with-updates
confirmation-statement · CS01
2021-12-28
accounts-with-accounts-type-total-exemption-full
accounts · AA
2021-12-22
confirmation-statement-with-no-updates
confirmation-statement · CS01
2021-02-12
accounts-with-accounts-type-total-exemption-full
accounts · AA
2020-12-01
accounts-with-accounts-type-total-exemption-full
accounts · AA
2020-01-10
confirmation-statement-with-no-updates
confirmation-statement · CS01
2019-11-27