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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 14
  • 1
    Mccloy, Jacqueline
    Accountant born in March 1955
    Individual (9 offsprings)
    Officer
    2010-08-02 ~ 2012-07-27
    OF - Director → CIF 0
    Mccloy, Jacqueline
    Individual (9 offsprings)
    Officer
    2011-10-14 ~ 2012-07-27
    OF - Secretary → CIF 0
  • 2
    Lavelle, Mark Stephen
    Director born in September 1958
    Individual (42 offsprings)
    Officer
    2012-07-27 ~ 2017-02-16
    OF - Director → CIF 0
  • 3
    Stevens, Peter John, Dr
    Company Director born in August 1946
    Individual (2 offsprings)
    Officer
    ~ 2007-10-01
    OF - Director → CIF 0
  • 4
    Marsh, Richard John
    Company Director born in February 1944
    Individual (11 offsprings)
    Officer
    2007-10-01 ~ 2009-02-19
    OF - Director → CIF 0
  • 5
    Bullock, Brian Standidge
    Director born in May 1946
    Individual (2 offsprings)
    Officer
    2002-12-01 ~ 2010-01-29
    OF - Director → CIF 0
  • 6
    Hill, Simon John
    Individual (12 offsprings)
    Officer
    2003-02-27 ~ 2003-05-09
    OF - Secretary → CIF 0
  • 7
    Ronchetti, Marc Arthur
    Chartered Accountant born in April 1976
    Individual (110 offsprings)
    Officer
    2019-12-04 ~ 2023-01-16
    OF - Director → CIF 0
  • 8
    Jenkins, Mark Alun
    Chartered Secretary born in March 1976
    Individual (41 offsprings)
    Officer
    2018-10-01 ~ now
    OF - Director → CIF 0
    Jenkins, Mark Alun
    Individual (41 offsprings)
    Officer
    2018-10-01 ~ now
    OF - Secretary → CIF 0
  • 9
    Chesney, Carol Tredway
    Company Secretary born in December 1962
    Individual (75 offsprings)
    Officer
    2012-07-27 ~ 2018-09-30
    OF - Director → CIF 0
    Chesney, Carol Tredway
    Individual (75 offsprings)
    Officer
    2012-07-27 ~ 2018-09-30
    OF - Secretary → CIF 0
  • 10
    Beswick, Simon
    Company Director born in July 1964
    Individual (70 offsprings)
    Officer
    2007-10-01 ~ 2012-07-27
    OF - Director → CIF 0
    Beswick, Simon
    Individual (70 offsprings)
    Officer
    2007-10-01 ~ 2011-10-14
    OF - Secretary → CIF 0
  • 11
    Heaton, Timothy John Barclay
    Acct born in January 1951
    Individual (6 offsprings)
    Officer
    1996-12-18 ~ 2007-10-01
    OF - Director → CIF 0
    Heaton, Timothy John Barclay
    Accountant
    Individual (6 offsprings)
    Officer
    2003-08-20 ~ 2007-10-01
    OF - Secretary → CIF 0
  • 12
    Gunning, Stephen William Lawrence
    Director born in March 1967
    Individual (49 offsprings)
    Officer
    2023-01-16 ~ now
    OF - Director → CIF 0
  • 13
    Stevens, Rachel Barbara
    Individual (1 offspring)
    Officer
    ~ 2003-02-27
    OF - Secretary → CIF 0
  • 14
    HALMA PLC
    HALMA PUBLIC LIMITED COMPANY 00040932
    Misbourne Court, Rectory Way, Amersham, Buckinghamshire, England
    Active Corporate (42 parents, 70 offsprings)
    Person with significant control
    2016-04-06 ~ dissolved
    PE - Ownership of voting rights - 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Has significant influence or controlCIF 0
parent relation
Company in focus

SONAR RESEARCH & DEVELOPMENT LIMITED

Period: 1981-12-31 ~ 2025-07-01
Company number: 01557176
Registered names
SONAR RESEARCH & DEVELOPMENT LIMITED - Dissolved
REGISDOME LIMITED - 1981-12-31
Standard Industrial Classification
74990 - Non-trading Company

  • SONAR RESEARCH & DEVELOPMENT LIMITED
    Info
    REGISDOME LIMITED - 1981-12-31
    Registered number 01557176
    Misbourne Court, Rectory Way, Amersham, Buckinghamshire HP7 0DE
    PRIVATE LIMITED COMPANY incorporated on 1981-04-22 and dissolved on 2025-07-01 (44 years 2 months). The company status is Dissolved.
    The last date of confirmation statement was made at 2024-08-14
    CIF 0
child relation
Offspring entities and appointments 0
  • Not found in our database.

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.