100/ 100
Robust

SONARDYNE INTERNATIONAL LIMITED

Active01299452|Private Limited Company|Est. 49 years ago|Updated 12 Apr 2026
Financial Health
Compliance & Legal
Governance & Structure
Network Risk
Operational Quality

SONARDYNE INTERNATIONAL LIMITED (01299452) is a private limited company registered in YATELEY, incorporated in 1977. The company operates in the manufacture of electronic measuring, testing etc. equipment, not for industrial process control sector. Our database holds 86 signals from 14 official sources covering this company's filings, appointments, and regulatory records. Risk assessment: 100/100 ("robust"), reflecting a strong compliance and financial profile. The company has 1 outstanding mortgage charge registered with Companies House.

Key Facts

Status
Active
Company Type
Private Limited Company
Location
YATELEY, GU46 6GD
Incorporated
21 Feb 1977
Accounts Category
FULL
Next Accounts Due
30 Sept 2026
Next Statement Due
7 Oct 2026
Mortgage Charges
1
Outstanding
1

About SONARDYNE INTERNATIONAL LIMITED

SONARDYNE INTERNATIONAL LIMITED is an active private company incorporated in 1977, based in Yateley, manufacturing electronic measuring and testing equipment.

Business Profile

Business Model
Manufacturing

Directors (7)

View all
  • MS
    MR SIMON CHARLES PARTRIDGE
    Director since 9 Mar 2006
  • DG
    DR GRAHAM BROWN
    Director since 24 Oct 2008
  • DD
    DR DARRYL NEWBOROUGH
    Director since 28 Aug 2015
  • MS
    MR STEPHEN JAMES FASHAM
    Director since 16 Apr 2019
  • MS
    MR STEPHEN PAUL MARTIN
    Director since 14 Jul 2020

Data Signals

View details
86
Total Signals
14
Data Sources
100/100
Risk Score

Good data coverage from 14 sources. Risk score of 100 indicates a strong compliance profile.

Financial
40
Compliance
19
growth
8
ESG
7
Trade
4
Governance
3
Risk
3
innovation
2

Industry Context

SONARDYNE INTERNATIONAL LIMITED is 1 of 5 manufacture of electronic measuring, testing etc. equipment, not for industrial process control companies in YATELEY, out of 1,291 active companies in this sector nationally (1,382 including dissolved).

19.5 yrs
Sector avg. age
93.5%
Older than peers
0.1%
Sector dissolution
Company: 49 yearsSector avg: 19.5 yrs
Older than 93.5% of active companies in this sector

Director Network

The 7 directors of SONARDYNE INTERNATIONAL LIMITED are connected to 18 other companies.

None of these connected companies have been dissolved.

Property Portfolio

SONARDYNE INTERNATIONAL LIMITED is listed as the proprietor of 6 properties in the HM Land Registry.

Properties are located in South East, South West.

Government Contracts

SONARDYNE INTERNATIONAL LIMITED has been awarded 8 government contracts with a combined value of £1.5M.

The most recent contract was with UK Research & Innovation (16 Apr 2025).

Financial Summary

as of 31 Dec 2023
Net Profit/Loss
£13.3M
Employees
266

Mortgage Charges

2
Total charges
0
Outstanding
2
Satisfied

Financial History

266 employees as of 31 Dec 2023.

YearTurnoverProfitNet Assets
31 Dec 2023£13.3M

Innovation & Grants

11
Grants awarded

SONARDYNE INTERNATIONAL LIMITED has received 11 Innovate UK grants. This demonstrates a strong commitment to research and innovation.

Compliance & Trade

ICO Registered
Modern Slavery Compliant
Exporter
Importer

Payment Practices

Period ending 31 Dec 2025
25 days
Avg. payment time
82%
Paid within 30 days
2%
Paid after 60 days

SONARDYNE INTERNATIONAL LIMITED pays invoices in an average of 25 days. 82% are paid within 30 days — a good payment track record.

Data Sources

This company profile is built from 12 official data sources: Ch Officers, Companies House, Contracts Finder, DWP, Gateway to Research, Gender Pay Gap Service, HM Land Registry, HMRC Trade Info, ICO, Innovate UK, Modern Slavery Registry, Payment Practices.

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Frequently Asked Questions

What does SONARDYNE INTERNATIONAL LIMITED do?

SONARDYNE INTERNATIONAL LIMITED is an active private company incorporated in 1977, based in Yateley, manufacturing electronic measuring and testing equipment..

Who are the directors of SONARDYNE INTERNATIONAL LIMITED?

Current directors include MR SIMON CHARLES PARTRIDGE, DR GRAHAM BROWN, DR DARRYL NEWBOROUGH and 2 more.

Where is SONARDYNE INTERNATIONAL LIMITED registered?

SONARDYNE INTERNATIONAL LIMITED is registered in YATELEY, United Kingdom.

What is the SIC code for SONARDYNE INTERNATIONAL LIMITED?

SONARDYNE INTERNATIONAL LIMITED operates under SIC code 26511 — Manufacture of electronic measuring, testing etc. equipment, not for industrial process control.

What is the risk score for SONARDYNE INTERNATIONAL LIMITED?

SONARDYNE INTERNATIONAL LIMITED has a risk score of 100 out of 100, classified as "Robust". This score is calculated from 86 data signals across 14 government sources.

When are the next accounts due for SONARDYNE INTERNATIONAL LIMITED?

The next accounts for SONARDYNE INTERNATIONAL LIMITED are due on 30 Sept 2026.

Does SONARDYNE INTERNATIONAL LIMITED own property in the UK?

Yes, SONARDYNE INTERNATIONAL LIMITED is listed as the proprietor of 6 properties in the HM Land Registry, located in South East, South West.

Does SONARDYNE INTERNATIONAL LIMITED have government contracts?

Yes, SONARDYNE INTERNATIONAL LIMITED has been awarded 8 government contracts with a combined value of £1.5M.

How many employees does SONARDYNE INTERNATIONAL LIMITED have?

According to the latest filed accounts (31 Dec 2023), SONARDYNE INTERNATIONAL LIMITED has 266 employees.

What is the manufacture of electronic measuring, testing etc. equipment, not for industrial process control sector like in the UK?

The dissolution rate for the manufacture of electronic measuring, testing etc. equipment, not for industrial process control sector in the UK is 0.1%. The average company age in this sector is 19.5 years.

Is SONARDYNE INTERNATIONAL LIMITED still trading?

SONARDYNE INTERNATIONAL LIMITED is currently listed as "Active" on Companies House, indicating it is still a registered company. An "Active" status means the company has not been dissolved, struck off, or entered into liquidation.

What type of company is SONARDYNE INTERNATIONAL LIMITED?

SONARDYNE INTERNATIONAL LIMITED is registered as a Private Limited Company, which is a company limited by shares whose shares are not offered to the general public. It is the most common type of UK company, offering limited liability to its shareholders.

How old is SONARDYNE INTERNATIONAL LIMITED?

SONARDYNE INTERNATIONAL LIMITED was incorporated on 21 Feb 1977, making it 49 years old. The company remains active and in good standing.

What industry does SONARDYNE INTERNATIONAL LIMITED operate in?

SONARDYNE INTERNATIONAL LIMITED is classified under SIC code 26511 (Manufacture of electronic measuring, testing etc. equipment, not for industrial process control). The Standard Industrial Classification system is used by the UK government to categorise businesses by their primary economic activity.

How much data is available on SONARDYNE INTERNATIONAL LIMITED?

We track 86 data signals from 14 official government sources for SONARDYNE INTERNATIONAL LIMITED.

Data verified: 12 Apr 2026 from 14 official sources · Data sourced from Ch Officers, Companies House, Contracts Finder, DWP, Gateway to Research, Gender Pay Gap Service, HM Land Registry, HMRC Trade Info, ICO, Innovate UK, Modern Slavery Registry, Payment Practices and other official UK government databases. Verify on Companies House.