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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

O'sullivan, Mark

    Related profiles found in government register
  • O'sullivan, Mark
    Irish born in February 1974

    Resident in United States

    Registered addresses and corresponding companies
    • 399 Park Avenue, 37th Floor, New York, NY 10022, United States

      IIF 1 IIF 2
    • 399 Park Avenue, Floor 37, New York, NY 10022, United States

      IIF 3
  • O’sullivan, Mark
    American born in February 1974

    Resident in United States

    Registered addresses and corresponding companies
    • 27, Old Gloucester Street, London, WC1N 3AX, United Kingdom

      IIF 4
  • O'sullivan, Mark
    The Netherlands born in February 1974

    Registered addresses and corresponding companies
    • 19 Nassau Road, Montclair, Essex, New Jersey, 07043, Usa

      IIF 5
child relation
Offspring entities and appointments 5
  • 1
    BLUE OWL GP STAKES ADVANTAGE EUROPE HOLDINGS LIMITED
    17284479
    27 Old Gloucester Street, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2026-06-18 ~ now
    IIF 4 - Director → ME
  • 2
    BOFF (U) QUALIFYING ASSET HOLDING COMPANY LIMITED
    15964769
    27 Old Gloucester Street, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2024-09-18 ~ now
    IIF 3 - Director → ME
  • 3
    DFF QUALIFYING ASSET HOLDING COMPANY (L) LIMITED
    15105822 15108978
    27 Old Gloucester Street, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2023-08-30 ~ now
    IIF 1 - Director → ME
  • 4
    DFF QUALIFYING ASSET HOLDING COMPANY (U) LIMITED
    15108978 15105822
    27 Old Gloucester Street, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2023-09-01 ~ now
    IIF 2 - Director → ME
  • 5
    LIQUIDITYHUB LIMITED
    - now 05779503
    Insolvency (Case 2) Members voluntary liquidation
    Commencement of winding up on 2009-09-23
    Dissolved on 2010-10-13
    LIQUIDITY HUB LIMITED - 2006-07-07
    C/o Begbies Traynor The Old Exchange, 234 Southchurch Road, Southend-on-sea, Essex, United Kingdom
    Dissolved Corporate (61 parents)
    Officer
    2008-12-17 ~ 2009-09-11
    IIF 5 - Director → ME

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Contains public sector information retrieved at 14 July 2026 and licensed under the Open Government Licence v3.0.