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Next accounts due

2026-12-31 (in 7mo)

Last filed for 2025-03-31

Confirmation statement due

2027-04-02 (in 11mo)

Last made up 2026-03-19

Watchouts

None on the register

Cash

£10M

+39.7% highest in 5 filed years

Net assets

£8M

+19.7% highest in 5 filed years

Employees

47

+23.7% highest in 5 filed years

Profit before tax

£1M

-43.1% vs 2024

Accounts

5-year trend · latest reflected 2025-03-31

Metric Trend 2020-03-312021-03-312022-03-312024-03-312025-03-31
Turnover £10,024,034£15,878,450
Operating profit £1,934,443£948,491
Profit before tax £1,962,170£1,116,963
Net profit £1,471,946£1,315,096
Cash £196,895£380,536£8,126,970£7,285,148£10,179,099
Total assets less current liabilities £2,299,285£2,586,368£3,580,447£6,678,468£7,940,486
Net assets £2,246,948£2,213,523£3,290,074£6,554,419£7,848,515
Equity £2,246,948£2,213,523£3,290,074£6,554,419£7,848,515
Average employees 3536373847
Wages £1,511,473£1,882,556
Directors' remuneration £401,267£425,101

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

Year-on-year

FY2024 → FY2025 · period ending 2025-03-31 vs 2024-03-31

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

Ratios

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

Ratio Trend 2020-03-312021-03-312022-03-312024-03-312025-03-31
Operating margin 19.3%6.0%
Net margin 14.7%8.3%
Return on capital employed 29.0%11.9%
Current ratio 1.86x1.62x
Interest cover 85.98x58.78x

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
Standalone (parent only)
Auditor
Gildernew & Co Ltd
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“In auditing the financial statements, we have concluded that the directors' use of the going concern basis of accounting in the preparation of the financial statements is appropriate. Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.”

Group structure

  1. COLLOIDE ENGINEERING SYSTEMS LTD · parent
    1. Sea Potential (N.I) Ltd 44.41% · Northern Ireland · Marine research and environmental services

Significant events

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

People

6 active · 2 resigned

Name Role Appointed Born Nationality
MCGUINNESS, Michelle Secretary 2002-03-12
DRENNAN, Stacey Director 2023-02-13 Jan 1990 British
HANNON, Shaun Director 2023-02-13 Oct 1983 Irish
IRWIN, Joanne Director 2020-05-06 Aug 1977 British
LEE, Brendan Director 2023-02-13 Feb 1985 Irish
MCGUINESS, Patrick Director 2002-03-12 Jan 1973 Northern Irish
Show 2 resigned officers
Name Role Appointed Resigned
PALMER, Robert Desmond Director 2002-03-12 2002-03-12
PENNICK, Ian Geoffrey Director 2020-05-06 2022-01-17

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Mrs Michelle Catherine Mcguinness Individual Shares 25–50%, Voting 25–50% 2021-10-05 Active
Mr Patrick Mcguiness Individual Shares 25–50%, Voting 25–50% 2017-03-12 Active

Filing timeline

Last 20 of 92 total filings

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

  • 2025-06-23 RESOLUTIONS Resolution
  • 2025-06-23 MA Memorandum articles
Date Type Category Description
2026-04-24 CS01 confirmation-statement Confirmation statement with updates PDF
2026-03-23 PSC04 persons-with-significant-control Change to a person with significant control PDF
2026-03-23 CH03 officers Change person secretary company with change date PDF
2025-12-30 AA accounts Accounts with accounts type full
2025-06-23 RESOLUTIONS resolution Resolution
2025-06-23 MA incorporation Memorandum articles
2025-04-11 CS01 confirmation-statement Confirmation statement with updates PDF
2025-01-07 AA accounts Accounts with accounts type full
2024-03-28 CS01 confirmation-statement Confirmation statement with updates PDF
2024-01-10 AA accounts Accounts with accounts type full
2023-07-10 SH02 capital Capital alter shares subdivision
2023-03-31 CS01 confirmation-statement Confirmation statement with updates PDF
2023-02-13 AP01 officers Appoint person director company with name date PDF
2023-02-13 AP01 officers Appoint person director company with name date PDF
2023-02-13 AP01 officers Appoint person director company with name date PDF
2022-12-20 AA accounts Accounts with accounts type unaudited abridged PDF
2022-03-22 CS01 confirmation-statement Confirmation statement with updates PDF
2022-03-21 CH01 officers Change person director company with change date PDF
2022-03-21 CH01 officers Change person director company with change date PDF
2022-03-21 CH03 officers Change person secretary company with change date PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
6

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.

Official Companies House page