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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.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Dr Oliver Thomas Harrison

    Related profiles found in government register
  • Dr Oliver Thomas Harrison
    British born in May 1975

    Resident in England

    Registered addresses and corresponding companies
    • 29, Upper Lattimore Road, St. Albans, AL1 3UA, England

      IIF 1
  • Harrison, Oliver, Dr
    British none born in May 1975

    Resident in England

    Registered addresses and corresponding companies
    • 7, Magnolia Gardens, St. Albans, Hertfordshire, AL1 1AT, England

      IIF 2
  • Harrison, Oliver Thomas, Dr
    British born in May 1975

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 55, Baker Street, London, W1U 7EU, United Kingdom

      IIF 3
    • Haberdashers' Hatcham College, Pepys Road, London, SE14 5SF, England

      IIF 4
    • 29, Upper Lattimore Road, St. Albans, AL1 3UA, England

      IIF 5
  • Harrison, Oliver Thomas, Dr
    Uk ceo born in May 1975

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 7, Magnolia Gardens, St. Albans, Hertfordshire, AL1 1AT, England

      IIF 6
  • Harrison, Oliver
    British born in May 1975

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 55 Baker Street, London, W1U 7EU, United Kingdom

      IIF 7
child relation
Offspring entities and appointments 6
  • 1
    HABERDASHERS' ASKE'S FEDERATION TRUST
    - now 02535091
    HABERDASHERS' ASKE'S HATCHAM COLLEGE TRUST - 2010-01-06
    Haberdashers' Hatcham College, Pepys Road, London, England
    Active Corporate (125 parents, 2 offsprings)
    Officer
    2021-07-05 ~ now
    IIF 4 - Director → ME
  • 2
    ITHACA HEALTH LIMITED
    08553122
    7 Magnolia Gardens, St. Albans, Hertfordshire
    Dissolved Corporate (3 parents)
    Officer
    2013-06-03 ~ dissolved
    IIF 6 - Director → ME
  • 3
    KOA HEALTH DIGITAL SOLUTIONS LIMITED
    13298286
    55 Baker Street, London, United Kingdom
    Active Corporate (3 parents)
    Officer
    2021-03-29 ~ now
    IIF 3 - Director → ME
  • 4
    KOA HEALTH LIMITED
    15011019
    55 Baker Street, London, United Kingdom
    Active Corporate (7 parents, 1 offspring)
    Officer
    2023-07-18 ~ 2025-12-19
    IIF 7 - Director → ME
  • 5
    MAGNOLIA GARDENS (ST ALBANS) MANAGEMENT COMPANY LIMITED
    09019559
    7 Magnolia Gardens, St. Albans, England
    Active Corporate (14 parents)
    Officer
    2015-06-02 ~ 2021-01-24
    IIF 2 - Director → ME
  • 6
    THE IDEAS MACHINE LIMITED
    08799661
    29 Upper Lattimore Road, St Albans, United Kingdom
    Active Corporate (2 parents)
    Officer
    2014-09-19 ~ now
    IIF 5 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 1 - Ownership of shares – More than 25% but not more than 50% OE
    IIF 1 - Ownership of voting rights - More than 25% but not more than 50% OE

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Contains public sector information retrieved at 22 March 2026 and licensed under the Open Government Licence v3.0.