SONARDYNE INTERNATIONAL LIMITED
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Next accounts due
2027-09-30 (in 1y)
Last filed for 2025-12-31
Confirmation statement due
2026-10-07 (in 5mo)
Last made up 2025-09-23
Watchouts
None on the register
Cash
£27M
+63.5% highest in 4 filed years
Net assets
£63M
+26% highest in 4 filed years
Employees
388
+9.9% highest in 4 filed years
Profit before tax
£26M
+11.4% highest in 4 filed years
Net assets
5-year trend · vs Technology median
Accounts
5-year trend · latest reflected 2025-12-31
| Metric | Trend | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-12-31 |
|---|---|---|---|---|---|---|
| Turnover | — | — | — | £78,723,826 | £89,843,761 | |
| Operating profit | — | — | — | £22,286,241 | £23,193,572 | |
| Profit before tax | — | £7,034,972 | £15,530,715 | £22,943,760 | £25,567,380 | |
| Net profit | — | £6,381,890 | £13,328,351 | £18,050,679 | £20,540,689 | |
| Cash | — | £3,128,730 | £8,250,217 | £16,739,494 | £27,366,801 | |
| Total assets less current liabilities | — | £32,886,999 | £42,603,791 | £51,207,733 | £65,645,105 | |
| Net assets | — | £32,281,657 | £41,610,007 | £50,160,686 | £63,201,375 | |
| Equity | £34,399,767 | £32,281,657 | £41,610,007 | £50,160,686 | £63,201,375 | |
| Average employees | — | 266 | 309 | 353 | 388 | |
| Wages | — | £14,425,438 | £16,850,507 | £19,991,911 | £22,450,889 | |
| Directors' remuneration | — | £1,370,587 | £849,238 | £878,478 | £916,487 |
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 2025-12-31 vs 2024-12-31
-
Turnover
+14.1%
£78,723,826 £89,843,761
-
Cash
+63.5%
£16,739,494 £27,366,801
highest in 4 filed years
-
Net assets
+26%
£50,160,686 £63,201,375
highest in 4 filed years
-
Employees
+9.9%
353 388
highest in 4 filed years
-
Operating profit
+4.1%
£22,286,241 £23,193,572
-
Profit before tax
+11.4%
£22,943,760 £25,567,380
highest in 4 filed years
-
Wages
+12.3%
£19,991,911 £22,450,889
highest in 4 filed years
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 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-12-31 |
|---|---|---|---|---|---|---|
| Operating margin | — | — | — | 28.3% | 25.8% | |
| Net margin | — | — | — | 22.9% | 22.9% | |
| Return on capital employed | — | — | — | 43.5% | 35.3% | |
| Current ratio | — | — | — | 2.56x | 4.02x | |
| Interest cover | — | — | — | 8409.90x | 363.91x |
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.
Name history
Renamed 3 times since incorporation
- SONARDYNE INTERNATIONAL LIMITED 1992-06-15 → present
- SONARDYNE (WESTERN) LIMITED 1983-03-21 → 1992-06-15
- SONARDYNE CONSULTANTS LIMITED 1980-12-31 → 1983-03-21
- SONARDYNE MARKETING LIMITED 1977-02-21 → 1980-12-31
Audit & accounting basis
- Accounting basis
- FRS 102
- Reporting scope
- Standalone (parent only)
- Auditor
- Azets Audit Services
- 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
- SONARDYNE INTERNATIONAL LIMITED · parent
- Sonardyne Inc. 100%
- Sonardyne Asia PTE Limited 100%
- Sonardyne Overseas Holdings Limited 100%
- Sonardyne Brazil Limited 100%
- Sonardyne Brasil Limitada 100%
- Sonardyne GmbH 100%
Significant events
- “Subsequent to the balance sheet date, Kraken Robotics Inc., a company registered in Canada, entered into an agreement to acquire Covelya Group Limited. The acquisition is not expected to affect the value of items disclosed in these financial statements.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
7 active · 26 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| BROWN, Graham, Dr | Director | 2008-10-24 | Feb 1971 | British |
| DUNN, Shaun Michael | Director | 2021-09-28 | Feb 1973 | British |
| FASHAM, Stephen James | Director | 2019-04-16 | Jan 1973 | British |
| MARTIN, Stephen Paul | Director | 2020-07-14 | Apr 1977 | British |
| MOYNEHAN, Gary John Scott | Director | 2025-03-04 | Jun 1979 | British |
| NEWBOROUGH, Darryl, Dr | Director | 2015-08-28 | Jun 1975 | British |
| PARTRIDGE, Simon Charles | Director | 2006-03-09 | Nov 1970 | British |
Show 26 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| CLUTTON, Roger Barry | Secretary | 1997-02-03 | 2013-10-31 |
| PARTRIDGE, Betsan Felicity | Secretary | — | 1997-02-03 |
| TAYLOR, Jane Elizabeth | Secretary | 2013-10-31 | 2016-11-30 |
| BALLOCH, Robert Baird | Director | 2006-03-09 | 2014-05-06 |
| BINKS, Richard Andrew | Director | 2007-10-25 | 2015-07-10 |
| BINKS, Richard Andrew | Director | 1999-06-29 | 2004-09-30 |
| BJOROY, Robin Per | Director | 2015-11-09 | 2016-04-18 |
| BRANNAN, Cheryl | Director | 2015-08-01 | 2018-01-10 |
| CHIBAH, Malik | Director | 2019-04-16 | 2022-04-29 |
| CLUTTON, Roger Barry | Director | 1997-02-03 | 2014-05-04 |
| DAVEY, Martin | Director | 2019-02-19 | 2024-12-31 |
| DYER, Graham John | Director | 2014-02-07 | 2018-12-31 |
| JAMIESON, Grant | Director | 1998-11-25 | 2003-11-21 |
| KELLAND, Nigel Christopher | Director | 1996-11-26 | 2006-04-30 |
| MOORE, Tim | Director | 2006-03-09 | 2018-12-31 |
| NORTON, John Ralph | Director | 2019-10-22 | 2024-06-28 |
| PARTRIDGE, Betsan Felicity | Director | — | 2019-03-12 |
| PARTRIDGE, Charles John | Director | — | 2020-04-21 |
| PEARCE, Christopher Dudley | Director | 1996-11-26 | 2014-03-28 |
| POLLEY, Ian Fane | Director | 1994-06-22 | 2006-10-31 |
| RAMSDEN, John Edward | Director | 2009-12-16 | 2021-12-31 |
| RAYNER, Ralph Frank, Dr | Director | 2006-04-01 | 2022-05-01 |
| RICHES, David Neil, Dr | Director | 1997-02-03 | 2014-05-24 |
| SALMON, James Douglas | Director | 1998-04-05 | 2002-02-01 |
| TAYLOR, Jane Elizabeth | Director | 2011-09-27 | 2016-11-30 |
| WILLIAMS, Peter Vaughan | Director | 1996-11-26 | 2011-03-22 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Covelya Group Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2020-03-31 | Active |
| Sonardyne Group Limited | Corporate entity | Shares 75–100% | 2016-04-06 | Ceased 2020-03-31 |
Filing timeline
Last 20 of 180 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-02 | AA | accounts | Accounts with accounts type full | |
| 2026-02-23 | MR04 | mortgage | Mortgage satisfy charge full | |
| 2025-10-24 | CH01 | officers | Change person director company with change date | |
| 2025-09-24 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-09-04 | AA | accounts | Accounts with accounts type full | |
| 2025-03-06 | AP01 | officers | Appoint person director company with name date | |
| 2025-02-11 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-01-13 | TM01 | officers | Termination director company with name termination date | |
| 2024-09-27 | AA | accounts | Accounts with accounts type full | |
| 2024-07-29 | MR01 | mortgage | Mortgage create with deed with charge number charge creation date | |
| 2024-07-11 | TM01 | officers | Termination director company with name termination date | |
| 2024-02-22 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-10-09 | AA | accounts | Accounts with accounts type full | |
| 2023-02-17 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2022-10-06 | AA | accounts | Accounts with accounts type full | |
| 2022-09-02 | CH01 | officers | Change person director company with change date | |
| 2022-05-10 | TM01 | officers | Termination director company with name termination date | |
| 2022-05-05 | TM01 | officers | Termination director company with name termination date | |
| 2022-02-23 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2022-01-11 | TM01 | officers | Termination director company with name termination date |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 5
- Capital events
- 0
- Officers appointed
- 0
- Officers resigned
- 0
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.