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Next accounts due

2027-09-30 (in 1y)

Last filed for 2025-12-31

Confirmation statement due

2026-10-27 (in 5mo)

Last made up 2025-10-13

Watchouts

1 item

Cash

£373

-90.7% vs 2024

Net assets

-£2M

+28.3% vs 2024

Employees

104

-5.5% vs 2024

Profit before tax

£924K

+937% vs 2024

Watchouts

Facts from the Companies House register and the latest accounts — not a rating

Name history

Renamed 1 time since incorporation

  1. SERIMAX LIMITED 2007-01-09 → present
  2. UMAX LIMITED 1981-01-05 → 2007-01-09

Accounts

2-year trend · latest reflected 2025-12-31

Metric Trend 2024-12-312025-12-31
Turnover £20,679,157£18,978,923
Operating profit £595,045£1,416,749
Profit before tax £89,078£923,744
Net profit -£34,224£907,850
Cash £4,029£373
Total assets less current liabilities -£3,103,705-£2,162,499
Net assets -£3,202,834-£2,294,984
Equity -£3,202,834-£2,294,984
Average employees 110104
Wages £9,261,641£8,799,891

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 2024-12-312025-12-31
Operating margin 2.9%7.5%
Net margin -0.2%4.8%
Return on capital employed -19.2%-65.5%
Gearing (liabilities / total assets) 149.8%138.0%
Current ratio 0.53x0.57x
Interest cover 1.18x2.87x

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 101
Reporting scope
Standalone (parent only)
Auditor
A9 Accountancy Limited
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“As discussed in note 1 to the financial statements, having assessed the financial position of the company and its future prospects, including the continuing availability of funding support from the Group (through a letter of support), the director considers the company has access to appropriate resources to allow it to continue in operational existence for at least 12 months from the date of signing the financial statements. Accordingly, the going concern basis continues to be adopted in the preparation of the financial statements.”

Group structure

  1. SERIMAX LIMITED · parent
    1. Serimax Angola Limited 100% · Pipeline Fabrication

Significant events

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

People

2 active · 18 resigned

Name Role Appointed Born Nationality
BURNESS PAULL LLP Corporate Secretary 2013-01-25
GRAINDOR, Guillaume Director 2019-07-17 Jul 1972 French
Show 18 resigned officers
Name Role Appointed Resigned
MILLS, James Ronald Secretary 2000-06-01 2002-01-07
MILLS, James Ronald Secretary 1996-02-12
THORN, Phillip Anthony Secretary 2002-01-07 2008-03-31
IAIN SMITH AND COMPANY Corporate Secretary 1996-02-12 2000-06-01
PAULL & WILLIAMSONS Corporate Secretary 2008-03-31 2009-04-06
PAULL & WILLIAMSONS LLP Corporate Secretary 2009-04-06 2013-01-25
CASTREC, Frederic Director 2011-10-31 2019-07-17
DICKSON, Leslie John Director 2006-02-28 2007-06-13
FRASER, James Milner Director 2002-08-01 2004-06-04
MACKAY, James Innes Director 2006-02-28 2006-12-31
MACKAY, James Innes Director 2005-10-24 2006-01-31
MACLELLAN, Edmund Donald William Director 1993-09-07 2007-06-13
MILLS, Ella Director 1997-06-02 2002-08-01
MILLS, Ella Director 1995-04-05
MILLS, Gerard James Director 1993-09-07 2002-08-01
MILLS, James Ronald Director 2006-02-08
THORN, Phillip Anthony Director 2002-01-07 2008-03-31
WILLIAMS, David John Director 2007-06-13 2011-10-31

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Aldebaran Capital Partners Corporate entity Shares 75–100%, Voting 50–75%, Appoints directors 2025-07-24 Active
Vallourec Sa Corporate entity Shares 75–100%, Voting 75–100%, Appoints directors 2016-04-06 Ceased 2025-07-24

Filing timeline

Last 20 of 172 total filings

Material constitutional events — rename, articles re-file, resolution

  • 2020-12-17 RESOLUTIONS Resolution
Date Type Category Description
2026-05-05 AA accounts Accounts with accounts type full
2026-01-20 AAMD accounts Accounts amended with accounts type full
2025-12-11 CH01 officers Change person director company with change date PDF
2025-10-17 CS01 confirmation-statement Confirmation statement with no updates PDF
2025-10-09 PSC02 persons-with-significant-control Notification of a person with significant control PDF
2025-10-09 PSC07 persons-with-significant-control Cessation of a person with significant control PDF
2025-08-13 AA accounts Accounts with accounts type full
2024-10-14 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-10-03 AA accounts Accounts with accounts type full
2023-10-31 CS01 confirmation-statement Confirmation statement with no updates PDF
2023-10-25 AA accounts Accounts with accounts type full
2023-10-03 PSC05 persons-with-significant-control Change to a person with significant control PDF
2023-02-02 AA accounts Accounts with accounts type full
2022-10-19 CS01 confirmation-statement Confirmation statement with no updates PDF
2021-12-20 AA accounts Accounts with accounts type full
2021-11-08 CS01 confirmation-statement Confirmation statement with updates PDF
2021-06-03 AA accounts Accounts with accounts type full
2020-12-17 SH01 capital Capital allotment shares PDF
2020-12-17 RESOLUTIONS resolution Resolution
2020-10-14 CS01 confirmation-statement Confirmation statement with no updates PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
7

last 12 months

Capital events
0

last 24 months

Officers appointed
0

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

FY2024 → FY2025 · period ending 2025-12-31 vs 2024-12-31

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