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PAYMENTCHECK
HomeCompany SearchBlogAwards
Sectors›Life Sciences and Medical Technology›SONARDYNE INTERNATIONAL LIMITED

SONARDYNE INTERNATIONAL LIMITED

PaymentCheck Score 2025
79Good
↑ 5.3vs last year
#2300 in UK
#29 in Life Sciences And Medical Technology
#375 in South East

Company Information

Company Number
01299452
Registered Address
Ocean House Blackbushe Business Park, Saxony Way, Yateley, Hampshire, GU46 6GD
Status
Active
Employee Count
353
Turnover
£78,724,000
EBITDA
£24,333,000

Additional Details

Website
https://www.sonardyne.com/
Company Type
Private limited Company
Incorporated On
21 February 1977
Nature of Business
26511 - Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
Industries
Life Sciences And Medical Technology
Region
South East
Payment dataScore historyFinancialsLocation

Time to Pay

Average Time to Pay
25 days
Shortest Period:30 days
Longest Period:90 days
Max Contractual:90 days

Payment Timeline

Within 30 Days
82%
31-60 Days
16%
After 60 Days
2%
Not Paid Within Terms22%

Payment Features

Participates in Codes✗ No
E-Invoicing✗ No
Supply Chain Finance✗ No

Performance Reports History

Reporting Period Filed: 2026-01-30
Reporting PeriodFiling DateAverage Time to Pay (days)Paid within 30 daysPaid 31-60 daysPaid after 60 daysNot Paid within Terms
01 Jul 2025 - 31 Dec 202530 Jan 20262582%16%2%22%
01 Jan 2025 - 30 Jun 202524 Jul 20253068%29%3%35%
01 Jul 2024 - 31 Dec 202422 Jan 20253271%25%4%36%
01 Jan 2024 - 30 Jun 202408 Jul 20242673%25%2%56%
01 Jul 2023 - 31 Dec 202331 Jan 20242770%26%4%41%
01 Jan 2023 - 30 Jun 202324 Jul 20232772%26%2%38%
01 Jul 2022 - 31 Dec 202226 Jan 20232871%25%4%38%
01 Jan 2022 - 30 Jun 202227 Jul 20222973%23%4%32%
01 Apr 2021 - 31 Dec 202124 Jan 20222775%23%2%26%
01 Apr 2021 - 30 Sept 202114 Oct 20212874%24%2%26%
01 Oct 2020 - 31 Mar 202128 Apr 20212868%29%3%41%
01 Apr 2020 - 30 Sept 202015 Oct 20203837%55%8%81%

Invoice Payment Practices

This information is as reported by the business, and responses are in their own words.

Payment Terms

Standard payment terms

Payment within 30 days of the date of invoice or such other period as may be agreed with the Supplier

Were there any changes to the standard payment terms in the reporting period?

No information available

Any other information about payment terms

No additional information

Maximum contractual payment period agreed

90

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

Other Payment Information

Has this business signed up to a code of conduct or standards on payment practices?

For example, signatories to The Prompt Payment Code must commit to paying 95% of their invoices within 60 days.

❌

Does this business offer e-invoicing in relation to qualifying contracts?

This is where suppliers can electronically submit and track invoices. It's not just allowing suppliers to email them an invoice.

❌

Does this business offer supply chain finance?

This is where a supplier who has submitted an invoice can be paid by a third-party finance provider earlier than the agreed payment date. The business would then pay the finance provider the invoiced sum.

❌

Under its payment practices and policies, can this business deduct sums from payments under qualifying contracts as a charge for remaining on a supplier list?

❌

During the reporting period, did the business deduct sums from payments as a charge for remaining on a supplier list?

No information available

Company Summary

SONARDYNE INTERNATIONAL LIMITED is a global company that specializes in subsea technology and engineering solutions. Founded in 1971, the company has grown to become a leader in the industry, providing innovative products and services to customers in over 80 countries.

The company's main focus is on the development and manufacture of underwater acoustic positioning, navigation, and imaging systems. These systems are used in a wide range of applications, including offshore oil and gas, ocean science, and marine construction.

In addition to their products and services, SONARDYNE INTERNATIONAL LIMITED is committed to sustainability. They have a dedicated sustainability program that aims to reduce their environmental impact and promote responsible business practices. This includes implementing energy-efficient technologies, reducing waste, and promoting diversity and inclusion within their workforce.

Key people at SONARDYNE INTERNATIONAL LIMITED include CEO John Ramsden, who has over 30 years of experience in the industry, and CFO Tim Duffield, who has been with the company since 1999. The company also has a team of experienced engineers and technicians who work towards providing the best solutions for their clients.

For more information on SONARDYNE INTERNATIONAL LIMITED and their products and services, you can visit their website at www.sonardyne.com. Their registered office address is 5 Richardson Road, Poole, Dorset, BH12 2HJ, United Kingdom. Customers can also contact the company through their website or by calling their customer service hotline at +44 (0) 1202 872288.

Financial Metrics

Cash
£27,366,801
Net Worth
£63,201,375
Total Current Assets
£66,873,850
Total Current Liabilities
£18,127,123

Company Location

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PaymentCheck

Our mission is to change the culture of late payments in the UK and help save over 55,000 companies every year which close due to cashflow issues.

Services

  • Payment Check
  • Business Solutions
  • API Access
  • Invoice Calculator
  • Late Payment Help
  • Get Certified

Company

  • About Us
  • Contact
  • Blog
  • Search Archive
  • Compare
  • EULA
  • Privacy Policy
  • Terms and Conditions

Awards

  • Methodology
  • 2025 Awards
  • 2024 Awards
  • 2023 Awards
  • 2022 Awards
  • 2021 Awards
  • 2020 Awards

Contact

  • office@paymentcheck.co.uk
  • +44 (0) 7915 608 057
  • Send Your Story

© 2026 Payment Check Ltd

Registered Address: 3rd Floor Suite 207 Regent Street London W1B 3HH

Made by Alastair Campbell