ALLEN & GRAHAM PLUMBING & HEATING LIMITED

💤Zombieactive

NI009575 · ltd · incorporated 1973-07-04

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 Feb 2025

Net worth

£979.3k

book net assets

Opportunity

78/100

Strong

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What this business does

Primary activity: Plumbing, heat and air-conditioning installation

Sector: Construction

Investor take

Pursue

Strong opportunity: asset-holding vehicle with strong profile and bankable structure.

Opportunity 78/100 (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 (73/100).

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

Lenders & charges

Confirmed no charges registered

Directors & officers

3 officers (1 active, 3 linked, 2 with DOB)

Ownership & PSC

1 active PSC(s) of 2 total, 2 with control declared

Director network

Network not yet resolved

Filing history

115 filings on record

Gazette notices

No matching gazette notices (standard for active companies)

Opportunity Score

78/100Strong

PassWatchWorth a lookStrongExceptional

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

Business quality

Active, clean filings, stable charge profile.

Acquirability

Strong succession / seller-readiness signals.

Risk profile

Few red flags.

Signal strength

Good data coverage for analysis.

Signals from accounts

Derived from iXBRL accounts · accounting standard not declared

Positive net assets

Net assets £979,296

Key financials

2 years extracted from filed iXBRL accounts

Cash

—

Net Worth

£979k

↑ 7.2% YoY

Current Assets

£513k

↑ 13% YoY

Current Liabilities

—

Hover to see exact values · click legend to toggle series

Financials

Extracted from Companies House accounts · accounting standard unknown

Metric	2025-02-28	2024-02-28
Total assets	£994.0k	£916.9k
Current assets	£513.4k	£453.5k
Net assets	£979.3k	£913.5k

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

Recent activity

Last 30 days

filings

Last 90 days

filings

• 2 persons-with-significant-control

Last 180 days

filings

• 2 persons-with-significant-control

Counts from Companies House filing history.

Corporate timeline (18 events)Click to expand

2026-04-14
📄
notification-of-a-person-with-significant-control
persons-with-significant-control · PSC01
2026-04-14
📄
cessation-of-a-person-with-significant-control
persons-with-significant-control · PSC07
2025-06-02
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2024-11-29
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2023-11-30
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2022-11-30
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2021-11-30
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2020-12-03
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2019-10-10
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2018-10-05
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2017-11-20
📄
accounts-with-accounts-type-micro-entity
accounts · AA
2016-09-15
📄
accounts-with-accounts-type-total-exemption-small
accounts · AA
2015-09-29
📄
annual-return-company-with-made-up-date-full-list-shareholders
annual-return · AR01
2015-06-12
📄
accounts-with-accounts-type-total-exemption-small
accounts · AA
2014-09-23
📄
annual-return-company-with-made-up-date-full-list-shareholders
annual-return · AR01
2013-06-21
➖
COCHRANE, Jeanette resigned
secretary
2001-12-27
➖
ALLEN, James Barnett resigned
director
1973-07-04
🏢
Company incorporated
As ALLEN & GRAHAM PLUMBING & HEATING LIMITED

Owner dependency

98/100

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.
+Founder name in company name: Company name contains director surname "ALLEN" — strong identity link between founder and business.
+Senior director age: Director aged approximately 58 — approaching natural succession window.

Succession & seller-readiness

65/100

Strong succession signal

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

SIGNALS

secondaryFounder aged 58+: Senior director is approximately 58. Early succession window.
primarySole active director: Only one director in control. No visible successor — buyers solve the succession problem.
secondaryStable-but-static management: Company is 53 years old and no new directors in the last 3 years — succession not yet being planned internally.

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%

Name	Shares	Voting rights	Nature of control	Notified
Mr Nigel James Allen Individual · British · DOB 05/1968 · age 58	75–100%	—	75-100% shares	14/04/2026

1 historic (ceased) PSC

Mr Nigel Allenceased 14/04/2026· 75-100% shares

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

Similar companies

Active · Construction · BT postcode area

Company	Est. value	Turnover	Net worth	Staff	Age	Opp	Director
BSG CIVIL ENGINEERING LIMITED→ NI021016 · est 1987	£25.64M £18.31M–£32.96M	£36.49M	—	8700	38y	85	73y
E.J.C. CONTRACTS LTD→ NI045412 · est 2003	£24.60M £17.57M–£31.62M	£27.26M	—	7700	23y	90	54y
P MCVEY BUILDING SYSTEMS LTD→ NI634141 · est 2015	£14.13M £10.09M–£18.17M	£24.15M	—	5400	10y	90	66y
M.J. MCBRIDE CONSTRUCTION LTD→ NI066620 · est 2007	£14.06M £10.04M–£18.07M	£19.82M	—	1500	18y	87	77y
SOUTH BANK SQUARE LTD→ NI605444 · est 2010	£12.16M £8.69M–£15.64M	£13.65M	—	400	15y	86	73y
P MCK LTD→ NI062901 · est 2007	£7.58M £5.42M–£9.75M	£16.85M	—	5100	19y	87	71y
CORICK INVESTMENTS LIMITED→ NI025056 · est 1990	£6.35M £4.54M–£8.16M	—	—	0	35y	92	69y
BAYVIEW CONTRACTS LTD→ NI041488 · est 2001	£4.57M £3.26M–£5.87M	£24.46M	—	17900	24y	87	61y
ADSTON (UK) LIMITED→ NI605512 · est 2010	£4.00M £2.86M–£5.15M	£11.40M	—	1100	15y	100	79y
F G ANDERSON & SONS LTD→ NI681234 · est 2021	£2.79M £1.99M–£3.59M	—	—	0	4y	85	69y
THORNTON ROOFING (IRELAND) LIMITED→ NI041349 · est 2001	£2.68M £1.91M–£3.44M	£16.60M	—	9300	24y	87	88y
C.B. CONTRACTS (N.I.) LTD→ NI038170 · est 2000	£1.49M £1.06M–£1.91M	—	—	70	26y	85	64y

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

Incorporated1973-07-04

Jurisdictionnorthern-ireland

Primary SIC43220 — Plumbing, heat and air-conditioning installation

Registered office

37 Pandora Street

Belfast

BT12 5PR

Filing status

Accounts

Next due: 2026-11-30

Last made up to: 2025-02-28

Confirmation statement

Next due: 2026-10-03

Last: 2025-09-19

Officers (1 active · 2 resigned)

ALLEN, Nigel→

director · ~58y

View their other companies + combined net worth →

Active

COCHRANE, Jeanette→

secretary · resigned 2013-06-21

Resigned

ALLEN, James Barnett→

director · ~93y · resigned 2001-12-27

Resigned

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

Recent filings (115 total)

notification-of-a-person-with-significant-control

persons-with-significant-control · PSC01

2026-04-14

cessation-of-a-person-with-significant-control

persons-with-significant-control · PSC07

2026-04-14

confirmation-statement-with-no-updates

confirmation-statement · CS01

2025-10-13