Company · London
Neutron Topco Limited
Activities of other holding companies n.e.c.
Official record Companies House · updated 27th September 2026 · Sources
Network
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Who leads it
Previous officers 4
- Stewart George Holness 2022-2025 View profile
- Milan Kellner 2021-2025 View profile
- Robert O'Brien 2021-2025 View profile
- Gareth Patrick Healy 2020-2025 View profile
Directors and secretaries as filed at Companies House.
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About
- What it does
- Activities of other holding companies n.e.c.
- Incorporated
- 18/12/2020
- Registered office
- London
Ownership
Owned by (4) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.
- Guy Michael L'Estrange Gillon ceased 2021-01-23
75-100% shares, 75-100% voting, appoints directors · notified 2020-12-18 - Gandalf Bidco Limited
75-100% shares, 75-100% voting, appoints directors · notified 2025-02-25 - Tenzing Private Equity II LP ceased 2021-01-23
50-75% shares, 50-75% voting · notified 2021-01-23 - Tenzing PE II GP LLP ceased 2025-02-25
50-75% shares, 50-75% voting · notified 2021-01-23
Group
- Neutron Topco Limited
is controlled by Guy Michael L'Estrange Gillon
Evidence
ceased 75-100% shares, 75-100% voting, appoints directors · notified 2020-12-18, ceased 2021-01-23 · source: Companies House PSC register
Ultimately controlled by Guy Michael L'Estrange Gillon.
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- DJH Holding Group Limited
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- Project DJH Velocity Bidco Limited
- 14158885
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- DJH Payroll and TAX Centre Limited
- 16274822
- Project Galaxy UK Bidco Limited
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- Khumbu Racing LLP
- Apex Bidco Limited
- Project DJH Cube Bidco Limited
- DJH IT Topco Limited
- Gravita Midco II Limited
- DJH Bexley LLP
- Project Galaxy UK Topco Limited
- Project Monty Midco Limited
- DJH Bexley Payroll Bureau LTD
- Project Livos Bidco Limited
- Gravita Nominees Limited
- Gravita Midco Limited
- Gravita III LLP
- Capital Allowance Review Service Limited
- DJH Bexley Topco LTD
- Project Monty Topco Limited
- Project Monty Bidco Limited
- DJH Ireland Topco LTD
- Neutron Midco Limited
- DJH Lwcc Topco LTD
- Gravita Limited
- DJH Topco Limited
Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.
Board analysis
Board DNA
How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.
2 directors on the board
- James Edward Mackay Director · appointed 2021
- Neil David Leishman Director · appointed 2025
First-time vs portfolio directors
Portfolio (2)
- James Edward Mackay Director · appointed 2021
- Neil David Leishman Director · appointed 2025
Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.
The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.
Sources
Official record from Companies House. Governance Register calculates the connections.
Record details
- Company number
- 13091052
- Status
- Active
- Type
- Private Limited Company
- Accounts next due
- 31/12/2026
- Edition
- Register edition compiled 27th September 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
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