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Company

Diploma Holdings PLC

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

Network

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

Who leads it

Previous officers 14

  1. Christopher Mark Davies 2022-2025 Director View profile
  2. John Morrison 2022-2025 Director View profile
  3. John Edward Nicholas 2018-2019 Director View profile
  4. Richard John Ingram 2018-2018 Director View profile
  5. John Iain Henderson 1998-2016 Director View profile
  6. Bruce Mckenzie Thompson 1994-2018 Director View profile
  7. William Reid 1994-2001 Director View profile
  8. Barry Matthew Walker 1993-1993 Director View profile
  9. Aubrey John Christopher Thomas 2002 Director View profile
  10. Lord Stewartby, Bernard Harold Ian Halley, Lord Stewartby 2001 Director View profile
  11. John Morrison 2020-2025 Secretary View profile
  12. Anthony James Gallagher 2013-2020 Secretary View profile
  13. Nigel Peter Lingwood 2001-2020 Secretary View profile
  14. Andrew Michael Reay Parkinson 2001 Secretary View profile

Directors and secretaries as filed at Companies House.

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About

Incorporated
01/05/1931

Ownership

Owned by (1) 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.

  • Diploma PLC
    75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06

Group

  1. Diploma Holdings PLC is controlled by Diploma PLC
    Evidence
    active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register

Ultimately controlled by Diploma PLC.

36 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.

3 directors on the board

3.1y median 1.1y
average tenure
7.2y
longest tenure

Directors past 6 years

First-time vs portfolio directors

Portfolio (3)

Also govern a charity

1
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 11Finance 8Property 2Business services 1Dormant 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
00256111
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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