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NEUTRON TOPCO LIMITED

Active
13091052·incorporated 2020-12-18

NEUTRON TOPCO LIMITED is an active UK private limited company, incorporated on 18 December 2020 at Companies House (number 13091052; OpenRegistry canonical ID GB-13091052-neutron-topco-limited). Sophymarine's OpenRegistry classifies it under SIC 64209 (Activities of other holding companies n.e.c.), one of 111,685 active UK entities in that code and one of 1,093,852 active companies registered in London (postcode SW1A). Programmatic access via MCP at https://openregistry.sophymarine.com/mcp.

Status
Active
Type
Private Limited Company
Incorporated
2020-12-18
Registered Address
49 ST JAMES'S STREET, 4TH FLOOR, LONDON, SW1A 1AH, ENGLAND
SIC
64209 — Activities of other holding companies n.e.c.
Country of origin
United Kingdom

Directors

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Shareholders

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Financials

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Filings

Check filing history of NEUTRON TOPCO LIMITED

Accounts

Last filed accounts made up to 2025-03-31. Next accounts due 2026-12-31. Financial year-end: 31/03. Filing class: GROUP.

Confirmation statement

Last confirmation statement made up to 2025-12-17. Next confirmation statement due 2026-12-31.

Persons with significant control

NEUTRON TOPCO LIMITED has 1 person with significant control on file:

  • Gandalf Bidco Limited (England reg. 16118261). Notified 2025-02-25.
    • Owns 75% or more of shares
    • Holds 75% or more of voting rights
    • Has the right to appoint and remove directors

3 historical PSC records have ceased:

  • Guy Michael L'Estrange Gillon born 1975 resident in United Kingdom, British national. Notified 2020-12-18. Ceased 2021-01-23.
    • Owns 75% or more of shares
    • Holds 75% or more of voting rights
    • Has the right to appoint and remove directors
  • Tenzing Private Equity Ii Lp (England reg. Lp021041). Notified 2021-01-23. Ceased 2021-01-23.
    • Owns 50–75% of shares
    • Holds 50–75% of voting rights
  • Tenzing Pe Ii Gp Llp (United Kingdom reg. So306945). Notified 2021-01-23. Ceased 2025-02-25.
    • Owns 50–75% of shares
    • Holds 50–75% of voting rights

Similar UK companies

Other companies registered under SIC 64209 (Activities of other holding companies n.e.c.):

Other companies registered in London:

Need real-time profile, officers, shareholders, financials or filing? Open the live profile at /company/gb/13091052.

Source: Companies House Free Company Data, refreshed 2026-05-01. Official record: find-and-update.company-information.service.gov.uk.