CONCRETE HARBOR LIMITED
💤Zombieactive
04739165 · ltd · incorporated 2003-04-18
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 Apr 2026
Net worth
£100
book net assets
Opportunity
75/100
Strong
What this business does
Primary activity: SIC 99999
Sector: Extraterritorial bodies
Investor take
PursueStrong opportunity: asset-holding vehicle 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
3 officers (2 active, 3 linked, 1 with DOB)
77
Ownership & PSC
1 active PSC(s) of 3 total, 3 with control declared
90
Director network
Network not yet resolved
30
Filing history
62 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.
Signals from accounts
Derived from iXBRL accounts · FRS 105 (micro)Positive net assets
Net assets £100
Key financials
2 years extracted from filed iXBRL accountsCash
—
Net Worth
£100
~ YoY
Current Assets
£100
~ YoY
Current Liabilities
—
Hover to see exact values · click legend to toggle series
Financials
Extracted from Companies House accounts · FRS 105 (micro)| Metric | 2026-04-30 | 2025-04-30 |
|---|---|---|
| Total assets | £100 | £100 |
| Current assets | £100 | £100 |
| Net assets | £100 | £100 |
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
3
filings
- • 1 accounts
- • 1 confirmation-statement
- • 1 officers
Last 180 days
3
filings
- • 1 accounts
- • 1 confirmation-statement
- • 1 officers
Counts from Companies House filing history.
Corporate timeline (20 events)Click to expand
- 2026-05-19📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2026-05-16📄change-person-director-company-with-change-dateofficers · CH01
- 2025-11-27📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2024-05-22📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2024-03-15📄notification-of-a-person-with-significant-controlpersons-with-significant-control · PSC01
- 2024-01-08📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2023-05-05📄cessation-of-a-person-with-significant-controlpersons-with-significant-control · PSC07
- 2023-01-12📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2022-01-10📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2021-01-07📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2019-06-18📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2019-05-29📄cessation-of-a-person-with-significant-controlpersons-with-significant-control · PSC07
- 2019-05-29📄notification-of-a-person-with-significant-controlpersons-with-significant-control · PSC01
- 2018-10-22📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2017-08-08📄accounts-with-accounts-type-micro-entityaccounts · AA
- 2003-05-13➕KNIEWSKI, Adam Michal appointeddirector
- 2003-05-13➖ASCOT DRUMMOND DIRECTORS LIMITED resignedcorporate-nominee-director
- 2003-04-18🏢Company incorporatedAs CONCRETE HARBOR LIMITED
- 2003-04-18➕ASCOT DRUMMOND SECRETARIAL LIMITED appointedcorporate-secretary
- 2003-04-18➕ASCOT DRUMMOND DIRECTORS LIMITED appointedcorporate-nominee-director
Owner dependency
85/100
Critical — business is the founderThe 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 23 years — deep operational knowledge concentrated in one person.
Succession & seller-readiness
75/100
Likely off-market candidateStrong 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 23 years. Very long tenure is a classic succession signal.
- secondaryStable-but-static management: Company is 23 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
cleanNo 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 Adam Michal Kniewski Individual · Polish · DOB 10/1977 · age 49 | 75–100% | 75–100% | board control75-100% shares · 75-100% voting · board control | 15/03/2024 |
2 historic (ceased) PSCs
- Ms Aneta Kniewskaceased 03/05/2023· 75-100% shares · 75-100% voting · board control
- Mrs Anna Kniewskaceased 29/05/2019· 75-100% shares · 75-100% voting · board control
From Companies House Persons with Significant Control filings. Share ranges are banded per the public PSC regime.
Similar companies
Active · Other · WD postcode area| Company | Est. value | Turnover | Net worth | Staff | Age | Opp | Director |
|---|---|---|---|---|---|---|---|
| BMAX CONSULTING LTD→ 13381954 · est 2021 · no financials extracted | — | — | — | — | 4y | — | — |
| CAREFINDERS LIMITED→ 03951056 · est 2000 · no financials extracted | — | — | — | — | 26y | — | — |
| CAROLINE AMANDA RUSS LIMITED→ 13442777 · est 2021 · no financials extracted | — | — | — | — | 4y | — | — |
| CHURCH SOCIETY TRUST→ 00079323 · est 1903 · no financials extracted | — | — | — | — | 122y | — | — |
| CITY & SUBURBAN PARKING LIMITED→ 07621006 · est 2011 · no financials extracted | — | — | — | — | 14y | — | — |
| CLOISTERS FREEHOLD LTD→ 08160265 · est 2012 · no financials extracted | — | — | — | — | 13y | — | — |
| COLLEYLAND RESIDENTS AND ROAD USERS ASSOCIATION LIMITED→ 02242935 · est 1988 · no financials extracted | — | — | — | — | 38y | — | — |
| COMPLEX’S CLARITY HEALTH GROUP LIMITED→ 16759586 · est 2025 · no financials extracted | — | — | — | — | — | — | — |
| CONFIDENT ENGLISH LTD.→ 08171464 · est 2012 · no financials extracted | — | — | — | — | 13y | — | — |
| COOPER MOSS RUTLAND LLP→ OC418127 · est 2017 · no financials extracted | — | — | — | — | 8y | — | — |
| CORBI LP→ LP018480 · est 2017 · no financials extracted | — | — | — | — | 8y | — | — |
| CORE RESOLUTIONS LLP→ OC346948 · est 2009 · no financials extracted | — | — | — | — | 16y | — | — |
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
Incorporated2003-04-18
Jurisdictionengland-wales
Primary SIC99999 — SIC 99999
Registered office
C/O Ascot Drummond Devonshire House
Manor Way
Borehamwood
Hertfordshire
WD6 1QQ
Filing status
Accounts
Next due: 2028-01-31
Last made up to: 2026-04-30
Confirmation statement
Next due: 2027-05-02
Last: 2026-04-18
Officers (2 active · 1 resigned)
ASCOT DRUMMOND SECRETARIAL LIMITED→
Activecorporate-secretary · appointed 2003-04-18
View their other companies + combined net worth →
KNIEWSKI, Adam Michal→
Activedirector · ~49y · appointed 2003-05-13
View their other companies + combined net worth →
ASCOT DRUMMOND DIRECTORS LIMITED→
Resignedcorporate-nominee-director · appointed 2003-04-18 · resigned 2003-05-13
Click a director name to see their full track record across all companies.
Recent filings (62 total)
accounts-with-accounts-type-micro-entity
accounts · AA
2026-05-19
confirmation-statement-with-no-updates
confirmation-statement · CS01
2026-05-19
change-person-director-company-with-change-date
officers · CH01
2026-05-16
accounts-with-accounts-type-micro-entity
accounts · AA
2025-11-27
confirmation-statement-with-no-updates
confirmation-statement · CS01
2025-05-13
confirmation-statement-with-no-updates
confirmation-statement · CS01
2024-05-27
accounts-with-accounts-type-micro-entity
accounts · AA
2024-05-22
notification-of-a-person-with-significant-control
persons-with-significant-control · PSC01
2024-03-15
accounts-with-accounts-type-micro-entity
accounts · AA
2024-01-08
cessation-of-a-person-with-significant-control
persons-with-significant-control · PSC07
2023-05-05
confirmation-statement-with-updates
confirmation-statement · CS01
2023-05-03
accounts-with-accounts-type-micro-entity
accounts · AA
2023-01-12
confirmation-statement-with-no-updates
confirmation-statement · CS01
2022-05-09
accounts-with-accounts-type-micro-entity
accounts · AA
2022-01-10
confirmation-statement-with-no-updates
confirmation-statement · CS01
2021-05-11