logo
explain how to read the page

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

Sillem, Hayaatun, Dr

    Related profiles found in government register
  • Sillem, Hayaatun, Dr
    British born in April 1976

    Resident in England

    Registered addresses and corresponding companies
    • 167-169, Great Portland Street, Fifth Floor, London, W1W 5PF, England

      IIF 1
    • 81, Rivington Street, London, EC2A 3AY, England

      IIF 2
    • C/o The Royal Academy Of Engineering, 3 Carlton House Terrace, London, SW1Y 5DG

      IIF 3
    • Fifth Floor, 167-169 Great Portland Street, London, W1W 5PF, England

      IIF 4
    • Northern & Shell Building, 5th Floor, 10 Lower Thames Street, London, EC3R 6EN, England

      IIF 5
  • Sillem, Hayaatun, Dr
    British ceo born in April 1976

    Resident in England

    Registered addresses and corresponding companies
    • Pricewaterhousecoopers Llp, One Chamberlain Square, Birmingham, B3 3AX

      IIF 6
  • Sillem, Hayaatun, Dr
    British chief executive born in April 1976

    Resident in England

    Registered addresses and corresponding companies
    • 3, Carlton House Terrace, London, SW1Y 5DG, England

      IIF 7
  • Sillem, Hayaatun, Dr
    British director born in April 1976

    Resident in England

    Registered addresses and corresponding companies
    • Unit 2, The Orient Centre, Greycaine Road, Watford, WD24 7GP

      IIF 8
  • Sillem, Hayaatun, Dr
    British deputy chief executive born in April 1976

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 5, Endeavour Square, London, E20 1JN, United Kingdom

      IIF 9
  • Dr Hayaatun Sillem
    British born in April 1976

    Resident in England

    Registered addresses and corresponding companies
    • 167-169, Great Portland Street, Fifth Floor, London, W1W 5PF, England

      IIF 10
    • Fifth Floor, 167-169 Great Portland Street, London, W1W 5PF, England

      IIF 11
child relation
Offspring entities and appointments 9
  • 1
    ARGENTIC ASSOCIATES LIMITED
    16731856
    167-169 Great Portland Street, Fifth Floor, London, England
    Active Corporate (2 parents)
    Officer
    2025-09-21 ~ now
    IIF 1 - Director → ME
    Person with significant control
    2025-09-21 ~ now
    IIF 10 - Ownership of shares – 75% or more OE
    IIF 10 - Right to appoint or remove directors OE
    IIF 10 - Ownership of voting rights - 75% or more OE
  • 2
    ENGINUITY - now
    SCIENCE, ENGINEERING AND MANUFACTURING TECHNOLOGIES ALLIANCE
    - 2021-01-28 02324869 12172649
    ENGINEERING AND MARINE TRAINING AUTHORITY - 2003-04-11
    ENGINEERING TRAINING AUTHORITY - 1996-11-04
    WATFORD TRAINING LIMITED - 1989-12-21
    Lytchett House, 13 Freeland Park, Wareham Road, Poole, Dorset, England
    Active Corporate (127 parents, 2 offsprings)
    Officer
    2016-06-23 ~ 2018-02-02
    IIF 8 - Director → ME
  • 3
    FESTIVAL 2022 LIMITED
    12581221
    Pricewaterhousecoopers Llp, One Chamberlain Square, Birmingham
    Dissolved Corporate (16 parents)
    Officer
    2020-09-01 ~ dissolved
    IIF 6 - Director → ME
  • 4
    FOR LEADERS BY LEADERS LIMITED
    16908794
    Fifth Floor, 167-169 Great Portland Street, London, England
    Active Corporate (2 parents)
    Officer
    2025-12-13 ~ now
    IIF 4 - Director → ME
    Person with significant control
    2025-12-13 ~ now
    IIF 11 - Ownership of voting rights - More than 25% but not more than 50% OE
    IIF 11 - Ownership of shares – More than 25% but not more than 50% OE
    IIF 11 - Right to appoint or remove directors OE
  • 5
    FOUNDATION FOR SCIENCE AND TECHNOLOGY
    01327814
    22 Greencoat Place, London, England
    Converted / Closed Corporate (135 parents)
    Officer
    2019-07-23 ~ now
    IIF 7 - Director → ME
  • 6
    LONDON TRANSPORT MUSEUM LIMITED
    06495761
    5 Endeavour Square, London, United Kingdom
    Active Corporate (48 parents, 1 offspring)
    Officer
    2017-03-05 ~ 2020-03-05
    IIF 9 - Director → ME
  • 7
    MISSION44
    13792350 12784574... (more)
    81 Rivington Street, London, England
    Active Corporate (14 parents)
    Officer
    2022-01-04 ~ now
    IIF 2 - Director → ME
  • 8
    RAE TRADING LIMITED
    08038360
    C/o The Royal Academy Of Engineering, 3 Carlton House Terrace, London
    Active Corporate (14 parents)
    Officer
    2018-01-25 ~ now
    IIF 3 - Director → ME
  • 9
    THE ENGINEERING AND TECHNOLOGY BOARD
    04322409
    Northern & Shell Building, 5th Floor, 10 Lower Thames Street, London, England
    Active Corporate (106 parents)
    Officer
    2018-01-01 ~ 2025-12-31
    IIF 5 - Director → ME

The content of this website is protected by AgonGuard.

© 2022- Polylogarithmic Technology Ltd (Registered in England and Wales No. 14256313). All rights reserved.

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