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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers
Active 4
  • 1
    Partridge, Simon Charles
    Born in November 1970
    Individual (9 offsprings)
    Officer
    icon of calendar 2021-11-15 ~ now
    OF - Director → CIF 0
    Mr Simon Charles Partridge
    Born in November 1970
    Individual (9 offsprings)
    Person with significant control
    icon of calendar 2024-11-13 ~ now
    PE - Ownership of shares – More than 25% but not more than 50% → CIF 0
    PE - Ownership of voting rights - More than 50% but less than 75% → CIF 0
  • 2
    Partridge, Charles John
    Born in September 1939
    Individual (6 offsprings)
    Officer
    icon of calendar ~ now
    OF - Director → CIF 0
    Partridge, Charles John
    Individual (6 offsprings)
    Officer
    icon of calendar ~ now
    OF - Secretary → CIF 0
    Mr Charles John Partridge
    Born in September 1939
    Individual (6 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    PE - Ownership of voting rights - More than 50% but less than 75% → CIF 0
  • 3
    Evans, Nicola Jane
    Born in April 1967
    Individual (4 offsprings)
    Officer
    icon of calendar 2021-03-02 ~ now
    OF - Director → CIF 0
    Mrs Nicola Jane Evans
    Born in April 1967
    Individual (4 offsprings)
    Person with significant control
    icon of calendar 2024-11-13 ~ now
    PE - Ownership of voting rights - 75% or more → CIF 0
    PE - Ownership of shares – More than 25% but not more than 50% → CIF 0
  • 4
    Mrs Betsan Felicity Partridge
    Born in December 1941
    Individual (1 offspring)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    PE - Ownership of shares – More than 25% but not more than 50% → CIF 0
Ceased 3
  • 1
    Clutton, Roger Barry
    Director born in July 1949
    Individual (1 offspring)
    Officer
    icon of calendar 2008-03-20 ~ 2014-05-04
    OF - Director → CIF 0
  • 2
    Partridge, Simon Charles
    Director born in November 1970
    Individual (9 offsprings)
    Officer
    icon of calendar 2009-12-17 ~ 2014-03-31
    OF - Director → CIF 0
  • 3
    Partridge, Betsan Felicity
    Director born in December 1941
    Individual (1 offspring)
    Officer
    icon of calendar ~ 2022-12-31
    OF - Director → CIF 0
parent relation
Company in focus

SONARDYNE HOLDINGS LIMITED

Previous names
SONARDYNE GROUP LIMITED - 2020-03-02
ALTONQUART LIMITED - 1986-01-01
Standard Industrial Classification
26511 - Manufacture Of Electronic Measuring, Testing Etc. Equipment, Not For Industrial Process Control
Brief company account
Fixed Assets - Investments
28,916,541 GBP2023-12-31
28,578,666 GBP2022-12-31
Debtors
6,926,450 GBP2023-12-31
1,027,068 GBP2022-12-31
Cash at bank and in hand
8,253,576 GBP2023-12-31
13,771,694 GBP2022-12-31
Current Assets
15,180,026 GBP2023-12-31
14,798,762 GBP2022-12-31
Net Current Assets/Liabilities
14,648,149 GBP2023-12-31
14,591,443 GBP2022-12-31
Total Assets Less Current Liabilities
43,564,690 GBP2023-12-31
43,170,109 GBP2022-12-31
Equity
Called up share capital
99,995 GBP2023-12-31
99,995 GBP2022-12-31
99,995 GBP2021-12-31
Retained earnings (accumulated losses)
43,464,695 GBP2023-12-31
43,070,114 GBP2022-12-31
42,621,838 GBP2021-12-31
Profit/Loss
394,581 GBP2023-01-01 ~ 2023-12-31
448,276 GBP2022-01-01 ~ 2022-12-31
Equity
43,564,690 GBP2023-12-31
Average Number of Employees
32023-01-01 ~ 2023-12-31
42022-01-01 ~ 2022-12-31
Investments in Subsidiaries
12,303,983 GBP2023-12-31
12,303,983 GBP2022-12-31
Amounts invested in assets
28,916,541 GBP2023-12-31
28,578,666 GBP2022-12-31
Finished Goods/Goods for Resale
0 GBP2023-12-31
0 GBP2022-12-31
Trade Debtors/Trade Receivables
0 GBP2023-12-31
0 GBP2022-12-31
Amount of corporation tax that is recoverable
51,458 GBP2023-12-31
0 GBP2022-12-31
Other Debtors
Current
0 GBP2023-12-31
0 GBP2022-12-31
Prepayments/Accrued Income
Current
37,118 GBP2023-12-31
0 GBP2022-12-31
Debtors - Deferred Tax Asset
Current
0 GBP2023-12-31
0 GBP2022-12-31
Corporation Tax Payable
Current
130,775 GBP2023-12-31
104,989 GBP2022-12-31
Other Creditors
Current
0 GBP2023-12-31
0 GBP2022-12-31
Creditors
Current
531,877 GBP2023-12-31
207,319 GBP2022-12-31
Bank Overdrafts
0 GBP2023-12-31
0 GBP2022-12-31
Total Borrowings
Current, Amounts falling due within one year
0 GBP2023-12-31
Debtors
Current
0 GBP2023-12-31
0 GBP2022-12-31
Related profiles found in government register
  • SONARDYNE HOLDINGS LIMITED
    Info
    SONARDYNE GROUP LIMITED - 2020-03-02
    ALTONQUART LIMITED - 2020-03-02
    Registered number 01968550
    icon of addressOcean House, Blackbushe Business Park, Saxony Way, Yateley, Hampshire GU46 6GD
    PRIVATE LIMITED COMPANY incorporated on 1985-12-04 (40 years). The company status is Active.
    The last date of confirmation statement was made at 2025-01-03
    CIF 0
  • SONARDYNE HOLDINGS LIMITED
    S
    Registered number 01968550
    icon of addressOcean House, Blackbushe Business Park, Saxony Way, Yateley, Hampshire, United Kingdom, GU46 6GD
    CIF 1 CIF 2
  • SONARDYNE HOLDINGS LIMITED
    S
    Registered number 01968550
    icon of addressOcean House, Blackbushe Business Park, Saxony Way, Yateley, Hampshire, GU46 6GD
    Private Company Limited By Shares in England And Wales, England
    CIF 3
(more)
child relation
Offspring entities and appointments
Active 5
  • 1
    icon of addressOcean House, Blackbushe Business Park, Yateley, England
    Active Corporate (2 parents)
    Equity (Company account)
    8,233 GBP2023-12-31
    Person with significant control
    icon of calendar 2022-12-22 ~ now
    CIF 4 - Ownership of shares – 75% or more → OE
    CIF 4 - Ownership of voting rights - 75% or more → OE
    CIF 4 - Right to appoint or remove directors → OE
  • 2
    SONARDYNE GROUP LIMITED - 2021-09-29
    icon of addressOcean House Blackbushe Business Park, Saxony Way, Yateley, Hampshire, United Kingdom
    Active Corporate (7 parents, 10 offsprings)
    Equity (Company account)
    41,278,006 GBP2023-12-31
    Person with significant control
    icon of calendar 2020-03-02 ~ now
    CIF 3 - Ownership of shares – 75% or more → OE
  • 3
    icon of address1 King William Street, London, United Kingdom
    Active Corporate (63 parents, 5 offsprings)
    Profit/Loss (Company account)
    4,743,575 GBP2024-04-01 ~ 2025-03-31
    Officer
    icon of calendar 2021-03-22 ~ now
    CIF 1 - LLP Member → ME
  • 4
    icon of addressOcean House, Blackbushe Business Park, Yateley, Hampshire
    Active Corporate (2 parents)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    CIF 5 - Ownership of shares – 75% or more → OE
  • 5
    icon of address6th Floor, 33 Holborn, London
    Active Corporate (54 parents)
    Officer
    icon of calendar 2019-05-20 ~ now
    CIF 2 - LLP Member → ME
Ceased 2
  • 1
    SONARDYNE CONSULTANTS LIMITED - 1983-03-21
    SONARDYNE (WESTERN) LIMITED - 1992-06-15
    SONARDYNE MARKETING LIMITED - 1980-12-31
    icon of addressOcean House Blackbushe Business Park, Saxony Way, Yateley, Hampshire
    Active Corporate (8 parents, 1 offspring)
    Equity (Company account)
    41,610,007 GBP2023-12-31
    Person with significant control
    icon of calendar 2016-04-06 ~ 2020-03-31
    CIF 6 - Ownership of shares – 75% or more → OE
  • 2
    WAVEFRONT SYSTEMS LIMITED - 2010-09-17
    SONARDYNE WAVEFRONT LIMITED - 2020-02-04
    icon of addressOcean House, Blackbushe Business Park, Yateley, England
    Active Corporate (7 parents)
    Equity (Company account)
    2,446,592 GBP2023-12-31
    Person with significant control
    icon of calendar 2016-06-01 ~ 2018-11-21
    CIF 7 - Ownership of shares – 75% or more → OE

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.