The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals 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
Inapplicable
parent relation
Individuals in focus

Mr John Victor Kearon

    Related profiles found in government register
  • Mr John Victor Kearon
    British born in October 1965

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Russell Square House 10-12, Russell Square, London, WC1B 5EH

      IIF 1
  • Kearon, John Victor
    British chief executive born in October 1965

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Russell Square House, 10-12 Russell Square, London, WC1B 5EH, United Kingdom

      IIF 2
  • Kearon, John Victor
    British chief executive officer born in October 1965

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Russell Square House, 10-12 Russell Square, London, WC1B 5EH, United Kingdom

      IIF 3
  • Kearon, John Victor
    British planning director born in October 1965

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 9 Carlyle Road, Cambridge, CB4 3DN

      IIF 4
  • Kearon, John Victor
    British founder and executive president born in October 1965

    Resident in England

    Registered addresses and corresponding companies

    • 4, More London Riverside, London, SE1 2AU, England

      IIF 5 IIF 6 IIF 7

    • 52, Bedford Row, Holborn, London, WC1R 4LR, England

      IIF 8
  • Kearon, John Victor

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments
Active 6
  • 1
    SYSTEM1 GROUP LIMITED - 2017-03-23
    Russell Square House, 10-12 Russell Square, London, United Kingdom
    Dissolved corporate (3 parents)
    Officer
    2016-10-20 ~ dissolved
    IIF 2 - director → ME
  • 2
    SYSTEM1 RESEARCH LIMITED - 2017-03-14
    Russell Square House, 10-12 Russell Square, London, United Kingdom
    Dissolved corporate (3 parents)
    Officer
    2016-01-07 ~ dissolved
    IIF 3 - director → ME
  • 3
    4 More London Riverside, London, England
    Corporate (3 parents)
    Equity (Company account)
    1 GBP2018-09-30
    Officer
    2018-04-17 ~ now
    IIF 6 - director → ME
  • 4
    SYSTEM-1 AGENCY LIMITED - 2016-01-25
    4 More London Riverside, London, England
    Corporate (3 parents, 1 offspring)
    Officer
    2015-10-19 ~ now
    IIF 5 - director → ME
  • 5
    BRAINJUICER GROUP PLC - 2017-03-23
    BRAINJUICER GROUP LIMITED - 2006-11-28
    4 More London Riverside, London, England
    Corporate (8 parents, 3 offsprings)
    Officer
    2006-10-05 ~ now
    IIF 8 - director → ME
  • 6
    BRAINJUICER LIMITED - 2017-03-14
    BRAINJUICER.COM LIMITED - 2003-03-18
    CREATIVE-TOOLBOX.COM LIMITED - 2000-04-19
    RESEARCH-TOOLBOX.COM LIMITED - 2000-03-02
    4 More London Riverside, London, England
    Corporate (3 parents, 1 offspring)
    Officer
    1999-12-29 ~ now
    IIF 7 - director → ME
Ceased 5
  • 1
    MUTANT MARKETING LIMITED - 1996-06-10
    58 Bloomsbury Street, London, United Kingdom
    Corporate (2 parents, 1 offspring)
    Equity (Company account)
    Retained earnings (accumulated losses)
    2,444,584 GBP2023-12-31
    Officer
    1996-01-12 ~ 2000-04-25
    IIF 4 - director → ME
  • 2
    4 More London Riverside, London, England
    Corporate (3 parents)
    Equity (Company account)
    1 GBP2018-09-30
    Officer
    2020-04-03 ~ 2020-10-12
    IIF 11 - secretary → ME
  • 3
    SYSTEM-1 AGENCY LIMITED - 2016-01-25
    4 More London Riverside, London, England
    Corporate (3 parents, 1 offspring)
    Officer
    2020-04-03 ~ 2020-10-12
    IIF 9 - secretary → ME
  • 4
    BRAINJUICER GROUP PLC - 2017-03-23
    BRAINJUICER GROUP LIMITED - 2006-11-28
    4 More London Riverside, London, England
    Corporate (8 parents, 3 offsprings)
    Officer
    2020-04-20 ~ 2020-10-12
    IIF 10 - secretary → ME
    Person with significant control
    2016-04-06 ~ 2018-11-19
    IIF 1 - Ownership of shares – More than 25% but not more than 50% → OE
  • 5
    BRAINJUICER LIMITED - 2017-03-14
    BRAINJUICER.COM LIMITED - 2003-03-18
    CREATIVE-TOOLBOX.COM LIMITED - 2000-04-19
    RESEARCH-TOOLBOX.COM LIMITED - 2000-03-02
    4 More London Riverside, London, England
    Corporate (3 parents, 1 offspring)
    Officer
    2020-04-03 ~ 2020-10-12
    IIF 12 - secretary → ME

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Contains public sector information retrieved at 24 April 2025 and licensed under the Open Government Licence v3.0.