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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company 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
Active 3
  • 1
    Hanby, Helen Elizabeth
    Born in June 1966
    Individual (7 offsprings)
    Officer
    icon of calendar 2019-06-04 ~ now
    OF - Director → CIF 0
    Hanby, Helen Elizabeth
    Individual (7 offsprings)
    Officer
    icon of calendar 2019-08-08 ~ now
    OF - Secretary → CIF 0
  • 2
    Purwaha, Amit Singh
    Born in April 1982
    Individual (10 offsprings)
    Officer
    icon of calendar 2025-07-14 ~ now
    OF - Director → CIF 0
  • 3
    icon of address225 Binney Street, Cambridge, United States
    Corporate (6 offsprings)
    Person with significant control
    icon of calendar 2019-02-28 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Ownership of voting rights - 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
Ceased 7
  • 1
    Kramer, Robin
    Chief Accounting Officer born in May 1965
    Individual
    Officer
    icon of calendar 2019-02-28 ~ 2019-04-02
    OF - Director → CIF 0
  • 2
    Martinez, Geronimo
    Director born in October 1985
    Individual
    Officer
    icon of calendar 2023-06-15 ~ 2025-07-14
    OF - Director → CIF 0
  • 3
    Green, Steven John
    Finance Director born in April 1977
    Individual (3 offsprings)
    Officer
    icon of calendar 2019-04-02 ~ 2020-04-24
    OF - Director → CIF 0
  • 4
    Mill, Trevor Anthony
    Senior V P Global Daftey And Regulatory Sciences born in April 1971
    Individual
    Officer
    icon of calendar 2019-04-02 ~ 2020-01-31
    OF - Director → CIF 0
  • 5
    Karp, Daniel Jeremy
    Finance Director born in December 1977
    Individual
    Officer
    icon of calendar 2019-04-02 ~ 2019-06-07
    OF - Director → CIF 0
  • 6
    Mochan, Lori Elizabeth
    Director born in August 1977
    Individual (1 offspring)
    Officer
    icon of calendar 2020-04-21 ~ 2023-06-15
    OF - Director → CIF 0
  • 7
    Dambach, Mike
    Company Treasurer born in August 1966
    Individual
    Officer
    icon of calendar 2019-02-28 ~ 2019-04-02
    OF - Director → CIF 0
parent relation
Company in focus

TUNGSTEN BIDCO LIMITED

Standard Industrial Classification
64209 - Activities Of Other Holding Companies N.e.c.

Related profiles found in government register
  • TUNGSTEN BIDCO LIMITED
    Info
    Registered number 11852085
    icon of addressBuilding 5 Foundation Park, Roxborough Way, Maidenhead, Berkshire SL6 3UD
    PRIVATE LIMITED COMPANY incorporated on 2019-02-28 (6 years 9 months). The company status is Active.
    The last date of confirmation statement was made at 2025-02-27
    CIF 0
  • TUNGSTEN BIDCO LIMITED
    S
    Registered number missing
    icon of addressBuilding 5 Foundation Park, Roxborough Way, Maidenhead, Berkshire, England, SL6 3UD
    Private Limited Company
    CIF 1
child relation
Offspring entities and appointments
Active 1
  • NIGHTSTAR THERAPEUTICS PLC - 2019-06-11
    NIGHTSTAR THERAPEUTICS LIMITED - 2017-09-15
    icon of addressBuilding 5 Foundation Park, Roxborough Way, Maidenhead, Berkshire, England
    Active Corporate (3 parents, 1 offspring)
    Person with significant control
    icon of calendar 2019-06-07 ~ now
    CIF 1 - Ownership of voting rights - 75% or moreOE
    CIF 1 - Ownership of shares – 75% or moreOE
    CIF 1 - Right to appoint or remove directorsOE

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.