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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 10
  • 1
    Guy Michael L'estrange Gillon
    Born in September 1975
    Individual (82 offsprings)
    Person with significant control
    2020-12-18 ~ 2021-01-23
    PE - Ownership of voting rights - 75% or moreCIF 0
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
  • 2
    O'brien, Robert
    Born in November 1963
    Individual (12 offsprings)
    Officer
    2021-01-23 ~ 2025-02-25
    OF - Director → CIF 0
  • 3
    Kellner, Milan
    Born in October 1988
    Individual (25 offsprings)
    Officer
    2021-01-23 ~ 2025-02-25
    OF - Director → CIF 0
  • 4
    Mackay, James Edward
    Born in November 1987
    Individual (9 offsprings)
    Officer
    2021-01-23 ~ now
    OF - Director → CIF 0
  • 5
    Healy, Gareth Patrick
    Born in July 1970
    Individual (44 offsprings)
    Officer
    2020-12-18 ~ 2025-02-25
    OF - Director → CIF 0
  • 6
    Leishman, Neil David
    Born in December 1985
    Individual (9 offsprings)
    Officer
    2025-02-25 ~ now
    OF - Director → CIF 0
  • 7
    Holness, Stewart George
    Born in June 1966
    Individual (83 offsprings)
    Officer
    2022-06-20 ~ 2025-02-25
    OF - Director → CIF 0
  • 8
    TENZING PRIVATE EQUITY II LP
    LP021041 LP017760... (more)
    Crown House, Regent Street, London, England
    Active Corporate (1 offspring)
    Person with significant control
    2021-01-23 ~ 2021-01-23
    PE - Ownership of voting rights - More than 50% but less than 75%CIF 0
    PE - Ownership of shares – More than 50% but less than 75%CIF 0
  • 9
    TENZING PE II GP LLP
    SO306945 SO307678... (more)
    50, Lothian Road, Edinburgh, Scotland
    Active Corporate (2 parents, 12 offsprings)
    Person with significant control
    2021-01-23 ~ 2025-02-25
    PE - Ownership of voting rights - More than 50% but less than 75%CIF 0
    PE - Ownership of shares – More than 50% but less than 75%CIF 0
  • 10
    GANDALF BIDCO LIMITED
    16118261 16118170
    1, Brewer's Green, London, United Kingdom
    Active Corporate (6 parents, 2 offsprings)
    Person with significant control
    2025-02-25 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
    PE - Ownership of voting rights - 75% or moreCIF 0
parent relation
Company in focus

NEUTRON TOPCO LIMITED

Period: 2020-12-18 ~ now
Company number: 13091052
Registered name
NEUTRON TOPCO LIMITED - now
Standard Industrial Classification
64209 - Activities Of Other Holding Companies N.e.c.

Related profiles found in government register
  • NEUTRON TOPCO LIMITED
    Info
    Registered number 13091052
    49 St James's Street, 4th Floor, London SW1A 1AH
    PRIVATE LIMITED COMPANY incorporated on 2020-12-18 (5 years 4 months). The status of the company number is Active.
    The last date of confirmation statement was made at 2025-12-17
    CIF 0
  • NEUTRON TOPCO LIMITED
    S
    Registered number 13091052
    Crown House, 143-147 Regent Street, London, W1B 4NR
    Limited Company in United Kingdom
    CIF 1 CIF 2
child relation
Offspring entities and appointments 2
  • 1
    NEUTRON MIDCO LIMITED
    13091510 13095456
    49 St James's Street, 4th Floor, London, England
    Active Corporate (6 parents, 1 offspring)
    Person with significant control
    2020-12-19 ~ now
    CIF 2 - Ownership of shares – 75% or more OE
    CIF 2 - Right to appoint or remove directors OE
    CIF 2 - Ownership of voting rights - 75% or more OE
  • 2
    NEUTRON NOMINEE LIMITED
    13143178
    Crown House, 143-147 Regent Street, London, United Kingdom
    Active Corporate (3 parents)
    Person with significant control
    2021-01-19 ~ now
    CIF 1 - Ownership of shares – 75% or more OE
    CIF 1 - Ownership of voting rights - 75% or more OE
    CIF 1 - Right to appoint or remove directors OE

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