01 Company overview
Identity and registration
- Official name
- SONARDYNE INTERNATIONAL LIMITED
- Company number
- 01299452
- Company type
- Private Limited Company
- Status
- Active
- Country of origin
- United Kingdom
- Dissolution date
- Not supplied
A registered office is not necessarily a trading location. The address is reproduced from the Companies House bulk record and should be interpreted in that legal context.
02 Filing dates
Accounts and statements
Last accounts made up to
31 December 2025Next accounts due
30 September 2027Last statement made up to
23 September 2025Next statement due
7 October 2026BritDB does not infer overdue status when the source does not state it.
03 Workforce reporting
Gender pay gap
- Median bonus gap
- 12.8%
- Mean bonus gap
- 17.1%
- Women receiving bonus
- 95.7%
- Men receiving bonus
- 95.5%
- Women in top quartile
- 9.6%
- Women in lower quartile
- 43.6%
Earlier reporting years (5)
- 250 to 49926.4% median hourly gap
- 250 to 49924.0% median hourly gap
- 250 to 49926.4% median hourly gap
- Less than 25029.8% median hourly gap
- 250 to 49925.5% median hourly gap
Positive gaps mean men were paid more; negative gaps mean women were paid more. These figures are employer-reported and describe the workforce distribution, not equal pay for the same job. The company link uses the exact Companies House number supplied by the service.
04 Supplier payments
Payment practices and performance
- Reporting period
- 1 January 2026 – 30 June 2026
- Filed
- 3 August 2026
- Shortest standard term
- 30 days
- Longest standard term
- 90 days
- E-invoicing offered
- No
- Supply-chain finance
- Not offered
- Payment codes
- No
- Construction retentions
- No qualifying construction contracts
Reported terms and dispute process
- Standard payment terms
Payment within 30 days of the date of invoice or such other period as may be agreed with the Supplier
- Dispute resolution process
Invoice queries are referred to Purchasing or relevant cost centre manager to liaise directly with supplier to resolve. Accounts Payable advise supplier and chase up outcome after 2-3 days
Earlier payment reports (11 shown)
- 25.0 average days to pay22.0% outside terms
- 30.0 average days to pay35.0% outside terms
- 32.0 average days to pay36.0% outside terms
- 26.0 average days to pay56.0% outside terms
- 27.0 average days to pay41.0% outside terms
- 27.0 average days to pay38.0% outside terms
- 28.0 average days to pay38.0% outside terms
- 29.0 average days to pay32.0% outside terms
- 27.0 average days to pay26.0% outside terms
- 28.0 average days to pay26.0% outside terms
- 28.0 average days to pay41.0% outside terms
This is a company-submitted statutory disclosure, not a credit rating. BritDB preserves the reporting period and links the report only through the Companies House number supplied by the official service. Percentages describe payments made during that period and may change in later reports.
05 Supply-chain transparency
Modern slavery statement
- Organisation
- SONARDYNE INTERNATIONAL LIMITED
- Group submission
- Yes
- Parent organisation
- COVELYA GROUP LIMITED
- Statement period
- 1 January 2025 – 31 December 2025
- Approved
- 28 May 2026
- Sectors
- Other
Organisation structure
Covered in the statement
Policies
Covered in the statement
Risk assessment
Covered in the statement
Due diligence
Covered in the statement
Training
Covered in the statement
Goals and KPIs
Covered in the statement
A registry entry records what the organisation declared in its statement. It is not an independent audit. Group statements can cover several companies; BritDB preserves each exact source-supplied company-number link and excludes approver names and email addresses.
06 Data protection
ICO fee-payer registration
Sonardyne International Limited
Registration ZA183952
- Registered from
- 13 May 2016
- Current end date
- 12 May 2027
This is a candidate association, not an official Companies House link. The ICO file supplies no company number. The organisation name and postcode uniquely matched this company in the current snapshot. BritDB excludes all DPO contact fields and does not publish unmatched personal entries.
07 Public procurement
Contracts Finder awards
ACC2027254 CHARYBDIS-001 a modular, open architecture for a reconfigurable unattended sensor deployment system
Defence Science and Technology Laboratory · ocds-b5fd17-acefe84b-248c-4c28-9a26-a68cb03ff833
- Award value
- £299,372.75
- Contract period
- 30 March 2022 – 30 September 2022
- Procedure
- Open procedure (below threshold)
All Through Water Communications
Defence Science and Technology Laboratory · ocds-b5fd17-28ac864f-57a0-4d69-97a2-f45f5f6ad6dc
- Award value
- £175,016
- Contract period
- 15 November 2021 – 31 March 2022
- Procedure
- Call-off from a framework agreement
UK SBS RE18431 - Submarine Navigation Pack
UK SHARED BUSINESS SERVICES LIMITED · ocds-b5fd17-a4c42091-7dfc-4613-a11c-1d1caace2265
- Award value
- £120,000
- Contract period
- 11 December 2018 – 31 March 2019
- Procedure
- Open procedure (below threshold)
The supplier link is exact, but the award remains buyer-published procurement data. BritDB requires the GB-COH identifier supplied in the Contracts Finder OCDS release and does not infer suppliers from similar names.
08 Ownership and control
People with significant control
Covelya Group Limited
- Owns 75% or more of shares
- Controls 75% or more of voting rights
- Can appoint or remove directors
- Notified
- 31 March 2020
Sonardyne Group Limited
- Owns 75% or more of shares
- Notified
- 6 April 2016
- Ceased
- 31 March 2020
PSC records are company-filed public-register information. When the exact same displayed individual name occurs at multiple companies, BritDB offers a non-indexed cross-reference page. It is a name match only, not proof that the records describe the same person. Service addresses and partial dates of birth are deliberately omitted.
09 Charity register
Charity Commission links
No exact company-number link in this snapshot
The Charity Commission extract did not explicitly associate this Companies House number with a charity. BritDB does not use a name-only match to fill the gap.
This company-level check covers the Charity Commission for England and Wales. Links are accepted only when the official extract supplies this exact company registration number. Scottish charities now have separate OSCR profiles, but OSCR’s bulk fields do not provide a Companies House number, so BritDB does not infer a company link.
10 Northern Ireland charity register
CCNI exact company links
No unambiguous company-number link found
The CCNI source number did not resolve uniquely to this Companies House record. BritDB did not use a name or address match.
CCNI publishes company numbers without a jurisdiction prefix. BritDB links only when the plausible padded UK and NI candidates resolve to exactly one Companies House company.
11 Sanctions screening
UK Sanctions List
No exact business-registration-number link found
The imported UK Sanctions List did not supply this Companies House number as a UK-linked business identifier. BritDB did not attempt a name-only match.
No exact link is not sanctions clearance. UK restrictions can apply through ownership or control even where an entity is not separately named. Always use the current official list and obtain appropriate advice for a legally significant decision.
12 Public procurement
Find a Tender links
These links use only the GB-COH identifier supplied in the procurement record. A company may have other public-sector work that is absent, older, below publication thresholds or published without a Companies House identifier.
13 Environmental register
Environment Agency waste registrations
No exact company-number registration linked
The licensed Environment Agency subset did not contain this exact Companies House number. BritDB did not attempt a name-only match.
This is a privacy-reduced, exact-company subset. The full official register also includes sole traders and applicants without a matching Companies House number. Check the current Environment Agency register before relying on registration status.
14 Nature of business
Standard Industrial Classification
Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
15 Connected public record
Checks beyond the company register
Charity Commission
0 exact company-number links.
Northern Ireland charities
0 unambiguous company-number links.
Public contracts
1 procurement process linked by exact GB-COH identifier.
Waste register
0 exact company-number registrations.
Corporate notices
The Gazette is not yet connected.
UK Sanctions List
No exact business-registration-number link in this report.
A checked source with no exact link is not a clean bill of health. Unchecked sources remain unknown, while sanctions may also apply through ownership or control of a listed person or entity.
16 Record timeline
Dates in the bulk record
- Accounts
Latest accounts made up to this date
- Confirmation statement
Latest confirmation statement made up to this date
- Incorporation
Company incorporated
17 Provenance
Sources for this profile
Identity, address, status, dates, SIC, previous names and mortgage totals.
Annual employer reports linked by the exact source-supplied Companies House number.
Statutory supplier-payment reports linked by the exact source-supplied Companies House number.
Annual statement summaries linked by exact source company number.
Privacy-reduced candidate associations based on a unique exact name-and-postcode match.
Historic awards linked by exact source-supplied GB-COH company identifier.
Current and ceased significant-control records joined by exact company number.
Daily England and Wales extract matched only by the official company registration number.
Daily CCNI export with company links only where the source number resolves unambiguously.
Complete FCDO list checked by exact UK-linked business registration number.
Procurement parties checked only through exact GB-COH identifiers.
Licensed subset linked only by exact Companies House number.
Financial regulation and licences.
Companies House, Charity Commission, OSCR and UK Sanctions List information is public-register data. BritDB reproduces and organises it with source-specific limits; official external links are kept on the dedicated source pages.