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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

Mackenzie, John Steven

    Related profiles found in government register
  • Mackenzie, John Steven
    British

    Registered addresses and corresponding companies
    • 27, Upper Brook Street, London, W1K 7QF, England

      IIF 1
  • Mackenzie, John Steven

    Registered addresses and corresponding companies
    • 10, Chiswell Street, London, EC1Y 4UQ, United Kingdom

      IIF 2
  • Mackenzie, John Steven
    born in July 1977

    Resident in England

    Registered addresses and corresponding companies
    • 2nd, Floor, 5 Young Street, London, W8 5EH, England

      IIF 3
  • Mackenzie, John Steven
    British born in July 1977

    Resident in England

    Registered addresses and corresponding companies
    • 3rd Floor, 2 & A Half Devonshire Square, London, EC2M 4UJ, United Kingdom

      IIF 4
  • Mackenzie, John Steven
    British director born in July 1977

    Resident in England

    Registered addresses and corresponding companies
    • 4th Floor, Reading Bridge House, George Street, Reading, Berkshire, RG1 8LS, England

      IIF 5
  • Mackenzie, John Steven
    British solicitor born in July 1977

    Resident in England

    Registered addresses and corresponding companies
    • 3rd Floor, 2 & A Half Devonshire Square, London, EC2M 4UJ, United Kingdom

      IIF 6
  • Mackenzie, John

    Registered addresses and corresponding companies
    • 10, Chiswell Street, London, EC1Y 4UQ

      IIF 7 IIF 8
  • Mackenzie, John Steven
    born in July 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 2 & A Half Devonshire Square, London, EC2M 4UJ, United Kingdom

      IIF 9
  • Mackenzie, John Steven
    British born in July 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mackenzie, John Steven
    British solicitor born in July 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 2 & A Half, Devonshire Square, London, EC2M 4UJ, England

      IIF 16
  • Mr John Steven Mackenzie
    British born in July 1977

    Resident in England

    Registered addresses and corresponding companies
    • Floor 30, 20 Fenchurch Street, London, EC3M 3BY, England

      IIF 17
child relation
Offspring entities and appointments
Active 11
  • 1
    CRISPIN STREET CT LIMITED
    FC039280
    3rd Floor 44 Esplanade, St Helier, Je49wg, Jersey
    Converted / Closed Corporate (3 parents)
    Officer
    2022-07-19 ~ now
    IIF 6 - Director → ME
  • 2
    JANE STREET EUROPE LIMITED
    05903707
    2 & A Half, Devonshire Square, London, England
    Active Corporate (2 parents)
    Officer
    2024-03-01 ~ now
    IIF 10 - Director → ME
  • 3
    JANE STREET FINANCIAL LIMITED
    - now 06211806
    JANE STREET FINANCIAL SERVICES LIMITED - 2007-05-24
    JANE STREET FINANCIAL LIMITED - 2007-05-14
    2 & A Half, Devonshire Square, London, England
    Active Corporate (4 parents)
    Officer
    2014-10-20 ~ now
    IIF 11 - Director → ME
  • 4
    JANE STREET INTERNATIONAL TRADING LTD
    08721394
    2 & A Half, Devonshire Square, London, England
    Active Corporate (2 parents)
    Officer
    2024-03-20 ~ now
    IIF 12 - Director → ME
  • 5
    JANE STREET UK PARTNERSHIP LLP
    OC439668
    2 & A Half Devonshire Square, London, United Kingdom
    Active Corporate (9 parents)
    Officer
    2022-08-01 ~ now
    IIF 9 - LLP Member → ME
  • 6
    JSCT CAYMAN
    FC039442
    Walkers Corporate Limited, 190 Elgin Avenue, George Town, Grand Cayman Ky1-9008, Cayman Islands
    Active Corporate (2 parents)
    Officer
    2022-07-19 ~ now
    IIF 4 - Director → ME
  • 7
    JSCT EUROPE LIMITED
    11402638
    2 & A Half, Devonshire Square, London, England
    Dissolved Corporate (1 parent)
    Officer
    2024-03-20 ~ dissolved
    IIF 16 - Director → ME
  • 8
    JSCT INTERNATIONAL CAYMAN LIMITED
    FC042731
    190 Egin Avenue, George Town, Grand Cayman Ky1-9008, Cayman Islands
    Active Corporate (3 parents, 1 offspring)
    Officer
    2025-09-02 ~ now
    IIF 15 - Director → ME
  • 9
    JSCT INTERNATIONAL HOLDINGS LIMITED
    16626699
    2 & A Half, Devonshire Square, London, United Kingdom
    Active Corporate (3 parents, 1 offspring)
    Officer
    2025-08-04 ~ now
    IIF 14 - Director → ME
  • 10
    JSCT ON-EXCHANGE LIMITED
    16629676
    2 & A Half, Devonshire Square, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2025-08-05 ~ now
    IIF 13 - Director → ME
  • 11
    MONTRICA SERVICES LTD
    05728000
    4th Floor Reading Bridge House, George Street, Reading, Berkshire, England
    Dissolved Corporate (6 parents)
    Officer
    2008-05-23 ~ dissolved
    IIF 5 - Director → ME
Ceased 5
  • 1
    JANE STREET EUROPE LIMITED
    05903707
    2 & A Half, Devonshire Square, London, England
    Active Corporate (2 parents)
    Officer
    2012-11-12 ~ 2015-08-20
    IIF 7 - Secretary → ME
  • 2
    JANE STREET FINANCIAL LIMITED
    - now 06211806
    JANE STREET FINANCIAL SERVICES LIMITED - 2007-05-24
    JANE STREET FINANCIAL LIMITED - 2007-05-14
    2 & A Half, Devonshire Square, London, England
    Active Corporate (4 parents)
    Officer
    2012-11-12 ~ 2015-07-24
    IIF 8 - Secretary → ME
    Person with significant control
    2016-04-06 ~ 2020-02-04
    IIF 17 - Has significant influence or control OE
  • 3
    JANE STREET INTERNATIONAL TRADING LTD
    08721394
    2 & A Half, Devonshire Square, London, England
    Active Corporate (2 parents)
    Officer
    2013-10-07 ~ 2015-08-20
    IIF 2 - Secretary → ME
  • 4
    TPG-AXON CAPITAL (UK), LLP
    OC328205
    2nd Floor, 5 Young Street, London
    Dissolved Corporate (2 parents, 1 offspring)
    Officer
    2010-09-29 ~ 2014-03-26
    IIF 3 - LLP Member → ME
  • 5
    TPG-AXON CAPITAL MANAGEMENT (UK),LTD
    06241652
    2nd Floor, 5 Young Street, London
    Dissolved Corporate (3 parents, 1 offspring)
    Officer
    2010-10-12 ~ 2012-08-01
    IIF 1 - Secretary → ME

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