AQUAMAIN LIMITED

💤Zombieactive
04566542 · ltd · incorporated 2002-10-18
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 Nov 2025
Net worth
—
book net assets
Opportunity
75/100
Strong
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What this business does
Primary activity: Plumbing, heat and air-conditioning installation
Sector: Construction
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: medium (76/100)

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 (2 active, 6 linked, 2 with DOB)
77
Ownership & PSC
1 active PSC(s) of 1 total, 1 with control declared
90
Director network
Network not yet resolved
30
Filing history
70 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£0Nov 2024Nov 2025

Hover to see exact values · click legend to toggle series

Financials

Extracted from Companies House accounts · FRS 102
Metric2025-11-302024-11-30
Average employees200200

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
1
filing
  • • 1 accounts
Counts from Companies House filing history.
Corporate timeline (26 events)Click to expand
  1. 2026-03-26
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  2. 2025-08-20
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  3. 2024-05-31
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  4. 2023-08-24
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  5. 2022-08-31
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  6. 2021-08-25
    📄
    accounts-with-accounts-type-total-exemption-full
    accounts · AA
  7. 2020-10-02
    📍
    change-registered-office-address-company-with-date-old-address-new-address
    address · AD01
  8. 2020-09-15
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  9. 2019-08-29
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  10. 2018-08-28
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  11. 2017-12-13
    📄
    gazette-filings-brought-up-to-date
    gazette · DISS40
  12. 2017-12-05
    📄
    resolution
    resolution · RESOLUTIONS
  13. 2017-12-05
    📄
    gazette-notice-compulsory
    gazette · GAZ1
  14. 2017-08-24
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  15. 2016-08-30
    📄
    accounts-with-accounts-type-micro-entity
    accounts · AA
  16. 2009-06-30
    ➕
    MAINPRIZE, Paul Andrew appointed
    secretary
  17. 2009-06-30
    ➖
    ATKINSON, John Reginald resigned
    secretary
  18. 2009-06-30
    ➖
    ATKINSON, John Reginald resigned
    director
  19. 2002-10-28
    ➕
    MAINPRIZE, Paul Andrew appointed
    director
  20. 2002-10-28
    ➕
    ATKINSON, John Reginald appointed
    secretary
  21. 2002-10-28
    ➖
    SECRETARIAL APPOINTMENTS LIMITED resigned
    corporate-nominee-secretary
  22. 2002-10-28
    ➕
    ATKINSON, John Reginald appointed
    director
  23. 2002-10-28
    ➖
    CORPORATE APPOINTMENTS LIMITED resigned
    corporate-nominee-director
  24. 2002-10-18
    🏢
    Company incorporated
    As AQUAMAIN LIMITED
  25. 2002-10-18
    ➕
    SECRETARIAL APPOINTMENTS LIMITED appointed
    corporate-nominee-secretary
  26. 2002-10-18
    ➕
    CORPORATE APPOINTMENTS LIMITED appointed
    corporate-nominee-director

Owner dependency

85/100
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 24 years — deep operational knowledge concentrated in one person.

Succession & seller-readiness

75/100
Likely off-market candidate

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

SIGNALS
  • primarySole active director: Only one director in control. No visible successor — buyers solve the succession problem.
  • primary20+ year tenure: Director in role 24 years. Very long tenure is a classic succession signal.
  • secondaryStable-but-static management: Company is 24 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
Mr Paul Andrew Mainprize
Individual · British · DOB 07/1973 · age 53
75–100%
—sig. influence75-100% shares · significant influence13/09/2016

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

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AR PLUMBING & PROPERTY MAINTENANCE LTD→
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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 →
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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.

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Company details

Statusactive
Typeltd
Incorporated2002-10-18
Jurisdictionengland-wales
Primary SIC43220 — Plumbing, heat and air-conditioning installation

Registered office

Halmar Pickering Road West
Snainton
Scarborough
YO13 9PL
England

Filing status

Accounts
Next due: 2027-08-31
Last made up to: 2025-11-30
Confirmation statement
Next due: 2026-09-13
Last: 2025-08-30

Officers (2 active · 4 resigned)

MAINPRIZE, Paul Andrew→
secretary · appointed 2009-06-30
View their other companies + combined net worth →
Active
MAINPRIZE, Paul Andrew→
director · ~53y · appointed 2002-10-28
View their other companies + combined net worth →
Active
ATKINSON, John Reginald→
secretary · appointed 2002-10-28 · resigned 2009-06-30
Resigned
SECRETARIAL APPOINTMENTS LIMITED→
corporate-nominee-secretary · appointed 2002-10-18 · resigned 2002-10-28
Resigned
ATKINSON, John Reginald→
director · ~66y · appointed 2002-10-28 · resigned 2009-06-30
Resigned
CORPORATE APPOINTMENTS LIMITED→
corporate-nominee-director · appointed 2002-10-18 · resigned 2002-10-28
Resigned

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

Recent filings (70 total)

accounts-with-accounts-type-total-exemption-full
accounts · AA
2026-03-26
confirmation-statement-with-no-updates
confirmation-statement · CS01
2025-09-11
accounts-with-accounts-type-total-exemption-full
accounts · AA
2025-08-20
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-10-28
accounts-with-accounts-type-total-exemption-full
accounts · AA
2024-05-31
confirmation-statement-with-no-updates
confirmation-statement · CS01
2023-09-13
accounts-with-accounts-type-total-exemption-full
accounts · AA
2023-08-24
confirmation-statement-with-no-updates
confirmation-statement · CS01
2022-09-12
accounts-with-accounts-type-total-exemption-full
accounts · AA
2022-08-31
confirmation-statement-with-no-updates
confirmation-statement · CS01
2021-10-04
accounts-with-accounts-type-total-exemption-full
accounts · AA
2021-08-25
confirmation-statement-with-no-updates
confirmation-statement · CS01
2020-10-02
change-registered-office-address-company-with-date-old-address-new-address
address · AD01
2020-10-02
accounts-with-accounts-type-micro-entity
accounts · AA
2020-09-15
confirmation-statement-with-no-updates
confirmation-statement · CS01
2019-09-11