opendata.bot
Company number
11634441

CSO MARINE GROUP LIMITED

Active
✓ Active company on the official register. Next accounts due 28 February 2027.

Company details

East of England, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
CSO MARINE GROUP LIMITED
Company number
11634441
Registered office
OFFICE 15, EAGLE HOUSE, CHELMSFORD, CM1 1BD, ENGLAND · 12 other companies at this postcode
Company type
Private Limited Company
Incorporated on
22 October 2018
Status
Active
Age
7 years
Previous names
CSO MARINE CONTRACTORS LIMITED (to 13 Jan 2022) · MALONES HOLDINGS LTD (to 13 Jan 2022)
Nature of business (SIC)
64209 — Activities of other holding companies n.e.c.
Accounts — next due
28 Feb 2027
Accounts — last made up to
31 May 2025
Confirmation statement — next due
05 Jul 2027
Confirmation statement — last
21 Jun 2026

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Mr Anthony John Colebrook
owns 25–50% of shares
Notified 22/10/2018
Mr Sam Stout
owns 25–50% of shares · holds 25–50% of voting rights
Notified 24/09/2020
Mrs Stacy Colebrook
owns 25–50% of shares
Notified 22/10/2018

Corporate structure

Who controls this company, and who they control in turn

3 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Mr Anthony John Colebrook
born 12/1980 · United Kingdom owns 25–50% of shares Notified 22/10/2018 Controls 3 companies
Mr Sam Stout
born 11/1987 · United Kingdom owns 25–50% of shares · holds 25–50% of votes Notified 24/09/2020 Controls 2 companies
Mrs Stacy Colebrook
born 06/1979 · United Kingdom owns 25–50% of shares Notified 22/10/2018 Controls 2 companies

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
13/01/2022 Registered name changed MALONES HOLDINGS LTD CSO MARINE CONTRACTORS LIMITED
13/01/2022 Registered name changed CSO MARINE CONTRACTORS LIMITED CSO MARINE GROUP LIMITED
24/09/2020 Person with significant control added Mr Sam Stout
22/10/2018 Person with significant control added Mrs Stacy Colebrook
22/10/2018 Person with significant control added Mr Anthony John Colebrook

Financial highlights

Parsed from the filed statutory accounts (£ thousands, except employees)

Source: Companies House bulk data filed accounts (iXBRL)
Metric FY2025FY2024
Total assets less current liabilities 339
▼ 69.1%
1,097
Employees (avg) 2 2

Documents for CSO MARINE GROUP LIMITED

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Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

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Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

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Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

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Data protection register

No entry found on the ICO register of fee payers under this name.

Not every organisation has to register — some are exempt. An absent entry is a question to ask, not a finding.

Get this company via API

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GET /v1/company/gb/11634441
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Read the API docs

Frequently asked questions

What is the company number of CSO MARINE GROUP LIMITED?
According to the official registry, the company number of CSO MARINE GROUP LIMITED is 11634441.
Where is CSO MARINE GROUP LIMITED registered?
The registered office is OFFICE 15, EAGLE HOUSE, CHELMSFORD, CM1 1BD, ENGLAND.
What is the SIC code of CSO MARINE GROUP LIMITED?
The nature of business is recorded under SIC code 64209 — Activities of other holding companies n.e.c..
Who controls CSO MARINE GROUP LIMITED?
Mr Anthony John Colebrook is recorded as a person with significant control, and owns 25–50% of shares.
When are the next accounts of CSO MARINE GROUP LIMITED due?
The next annual accounts are due by 28 February 2027, and the last accounts were made up to 31 May 2025.

About CSO MARINE GROUP LIMITED (11634441)

CSO MARINE GROUP LIMITED is a private limited company incorporated on 22 October 2018 and registered in the United Kingdom under company number 11634441. Its registered office is at OFFICE 15, EAGLE HOUSE, CHELMSFORD, CM1 1BD, ENGLAND. The recorded nature of business is activities of other holding companies n.e.c. (SIC 64209). The company is currently active , with statutory accounts last made up to 31 May 2025. , and the person with significant control is Mr Anthony John Colebrook. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

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