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Next accounts due

2026-09-30 (in 4mo)

Last filed for 2024-12-31

Confirmation statement due

2026-06-26 (in 1mo)

Last made up 2025-06-12

Watchouts

None on the register

Cash

£8M

-55% vs 2023

Net assets

£9M

+5.9% vs 2023

Employees

115

+49.4% vs 2023

Profit before tax

£522K

-59.4% vs 2023

Name history

Renamed 1 time since incorporation

  1. M SUBS LIMITED 2008-07-30 → present
  2. M SUBS LIMITED 2006-07-12 → 2008-07-30

Accounts

2-year trend · latest reflected 2024-12-31

Metric Trend 2023-12-312024-12-31
Turnover £9,681,379£14,110,135
Operating profit £1,172,311£332,830
Profit before tax £1,286,585£521,729
Net profit £1,313,352£501,158
Cash £17,721,372£7,981,340
Total assets less current liabilities £8,546,914£9,383,926
Net assets £8,443,498£8,944,656
Equity £8,443,498£8,944,656
Average employees 77115
Wages £3,258,384£4,542,210

Values shown as filed in the company's annual accounts. indicates the figure wasn't present under that line item in that period. About these numbers

Ratios

Computed from the line items above — sparklines read oldest → newest

Ratio Trend 2023-12-312024-12-31
Operating margin 12.1%2.4%
Net margin 13.6%3.6%
Return on capital employed 13.7%3.5%
Current ratio 1.41x1.72x
Interest cover 279.52x9.19x

Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.

Audit & accounting basis

Accounting basis
FRS 102
Reporting scope
Consolidated group
Auditor
WP Audit Services LLP
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“The group has positive cashflow from these contracts and significant cash reserves at the year end, assisting with the determination that the group is a going concern.”

Group structure

  1. M SUBS LIMITED · parent
    1. Marine AI Limited 60% · England · Research and development
    2. Turnquay Wharf Ltd 75% · England · Letting of real estate
    3. Sigma Precision Engineering Ltd 100% · England · Manufacture of marine tools
    4. Zero Yachts Ltd 75% · England · Building of pleasure and sporting boats
    5. M Subs PTY Ltd 75% · Australia · Research and development
    6. Marine AI (NZ) Limited 100% · New Zealand · Research and development

Significant events

Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers

People

5 active · 8 resigned

Name Role Appointed Born Nationality
BARRETTO, Paul Douglas Director 2016-05-19 Jan 1965 British
DOWSETT, Patrick Giles Director 2024-02-01 Apr 1966 British
SHAW, Robert John Director 2014-03-07 Jan 1962 British
TROUGHTON, Matthew Director 2025-06-24 Apr 1995 British
WYATT, Laura Samantha Director 2020-01-01 May 1989 British
Show 8 resigned officers
Name Role Appointed Resigned
MOORHOUSE, Gillian Mary Secretary 2006-07-12 2007-05-14
MOORHOUSE, Paul Patrick Secretary 2007-05-14 2012-11-30
SAME-DAY COMPANY SERVICES LIMITED Corporate Nominee Secretary 2006-07-12 2006-07-12
COOK, Gregory Miner Director 2007-10-11 2016-05-19
DOWSETT, Patrick Giles Director 2020-01-24 2021-03-29
MOORHOUSE, Paul Patrick Director 2006-07-12 2012-11-30
PHANEUF, Brett Anthony Director 2007-07-15 2025-02-28
WILDMAN & BATTELL LIMITED Corporate Nominee Director 2006-07-12 2006-07-12

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Mr Gregory Miner Cook Individual Shares 75–100%, Voting 75–100% 2023-05-16 Active
Submergence Group Llc Corporate entity Shares 75–100%, Voting 75–100% 2016-06-30 Ceased 2023-05-16

Filing timeline

Last 20 of 83 total filings

Date Type Category Description
2026-01-03 AA accounts Accounts with accounts type group
2025-06-24 CS01 confirmation-statement Confirmation statement with no updates PDF
2025-06-24 AP01 officers Appoint person director company with name date PDF
2025-03-11 TM01 officers Termination director company with name termination date PDF
2025-01-06 AA accounts Accounts with accounts type group
2024-06-12 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-04-22 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2024-02-28 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2024-02-06 AP01 officers Appoint person director company with name date PDF
2024-01-09 AA accounts Accounts with accounts type full
2023-07-24 CS01 confirmation-statement Confirmation statement with no updates PDF
2023-05-31 PSC04 persons-with-significant-control Change to a person with significant control PDF
2023-05-16 PSC01 persons-with-significant-control Notification of a person with significant control PDF
2023-05-16 PSC07 persons-with-significant-control Cessation of a person with significant control PDF
2023-01-07 AA accounts Accounts with accounts type full
2022-08-25 CH01 officers Change person director company with change date PDF
2022-07-14 CS01 confirmation-statement Confirmation statement with no updates PDF
2022-01-05 AA accounts Accounts with accounts type full
2021-07-14 CS01 confirmation-statement Confirmation statement with no updates PDF
2021-03-29 TM01 officers Termination director company with name termination date PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
3

last 12 months

Capital events
0

last 24 months

Officers appointed
1

last 12 months

Officers resigned
0

last 12 months

Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.

Year-on-year

FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31

Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers

Official Companies House page