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Company

BY Chelmer PLC

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Official record Companies House · updated 27th September 2026 · Sources

Network

The large node is BY Chelmer PLC. Red nodes are organisations, white nodes are people. Sign in free to explore further.

Who leads it

Previous officers 20

  1. Andrew Brian Deacon 2024-2025 Director View profile
  2. Alasdair Campbell 2022-2023 Director View profile
  3. James Christopher Heath 2018-2024 Director View profile
  4. Anthony Robert Faulkner 2017-2025 Director View profile
  5. Elena Giorgiana Wegener 2013-2021 Director View profile
  6. Luc Desplanques 2012-2012 Director View profile
  7. Stephen Howard Mcdonald 2012-2012 Director View profile
  8. Alexis Grolin 2011-2012 Director View profile
  9. Simon David Phipps 2011-2012 Director View profile
  10. David John Carr 2008-2012 Director View profile
  11. Lionel Marie Michel Christolomme 2008-2012 Director View profile
  12. Yann Paul Le Saux 2007-2011 Director View profile
  13. Pascal Minault 2005-2008 Director View profile
  14. Sebastien Pejoan 2005-2007 Director View profile
  15. Bruno Albert Bodin 2005-2012 Director View profile
  16. Bryn David Murray Jones 2005-2007 Director View profile
  17. Sebastien Pochon 2005-2008 Director View profile
  18. Stephen Owen 2009-2011 Secretary View profile
  19. Philip Miller 2008-2009 Secretary View profile
  20. Louisa Jane Jenkinson 2005-2008 Secretary View profile

Directors and secretaries as filed at Companies House.

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About

Incorporated
21/07/2005

Ownership

Owned by (2) 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.

Group

  1. BY Chelmer PLC is controlled by BY Chelmer (Holdings) Limited
    Evidence
    active 75-100% shares, 75-100% voting · notified 2016-04-06 · source: Companies House PSC register
  2. BY Chelmer (Holdings) Limited is controlled by Infrared Infrastructure Yield Holdings Limited
    Evidence
    active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register
  3. Infrared Infrastructure Yield Holdings Limited is controlled by Infrared Infrastructure Yield General Partner Limited
    Evidence
    active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register
  4. Infrared Infrastructure Yield General Partner Limited is controlled by Infrared Capital Partners (Holdco) Limited
    Evidence
    active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register
  5. Infrared Capital Partners (Holdco) Limited is controlled by Infrared Partners LLP
    Evidence
    active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register
  6. Infrared Partners LLP is controlled by Werner Marc Friedrich Von Guionneau
    Evidence
    ceased significant influence (LLP) · notified 2016-04-06, ceased 2023-07-01 · source: Companies House PSC register

Ultimately controlled by Werner Marc Friedrich Von Guionneau.

444 other companies in this group

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

2.4y median 2.4y
average tenure
3.6y
longest tenure
0
directors past 6 years

First-time vs portfolio directors

Portfolio (2)

0
left in the last 12 months

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.

Professional services 13Health and social care 9Business services 8Finance 8Construction 3Property 2Utilities 2Dormant 1

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
05515307
Status
Active
Type
Public Limited Company
Edition
Register edition compiled 27th September 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

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