Company
Carl Byoir (UK) Limited
Carl Byoir (UK) Limited is an active UK company (number 03364908), incorporated 1997, with 2 current directors, Mark James Hinton-Jones and Pippa Burridge. Source: Companies House, updated 4th October 2026.
Official record Companies House · updated 4th October 2026 · Sources
Network
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Who leads it
Previous officers 9
- Simon John Hilton Whitehead 2019-2025 View profile
- Richard William Millar 2012-2021 View profile
- James Michael Bull 2008-2012 View profile
- David John Mclaren 2004-2008 View profile
- Andrew David Laurence 1998-2008 View profile
- Richard Charles Jaques 1998-1998 View profile
- Sarah Louise Jane Leuschke 2020-2025 View profile
- Anthony Gwilym Stimpson 1999-2019 View profile
- Michael Pledge 1998-2002 View profile
Directors and secretaries as filed at Companies House.
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About
- Incorporated
- 02/05/1997
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.
- Hill & Knowlton Limited
75-100% shares, 75-100% voting · notified 2016-04-06
Group
- Carl Byoir (UK) Limited
is controlled by Hill & Knowlton Limited
Evidence
active 75-100% shares, 75-100% voting · notified 2016-04-06 · source: Companies House PSC register - Hill & Knowlton Limited
is controlled by Burson Group Limited
Evidence
active 75-100% shares, 75-100% voting · notified 2025-01-01 · source: Companies House PSC register - Burson Group Limited
is controlled by WPP Brands (UK) Limited
Evidence
active 25-50% shares, 25-50% voting · notified 2025-01-01 · source: Companies House PSC register - WPP Brands (UK) Limited
is controlled by WPP Brands Development Holdings (UK) Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2025-12-18 · source: Companies House PSC register - WPP Brands Development Holdings (UK) Limited
is controlled by WPP 2323 Limited
Evidence
active 50-75% shares, 75-100% voting · notified 2021-06-30 · source: Companies House PSC register - WPP 2323 Limited
is controlled by WPP 2005 Limited
Evidence
active 75-100% shares, 75-100% voting · notified 2021-12-01 · source: Companies House PSC register - WPP 2005 Limited
is controlled by WPP MR Overseas Media Holdings Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2023-12-11 · source: Companies House PSC register - WPP MR Overseas Media Holdings Limited
is controlled by WPP Jubilee Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2019-11-18 · source: Companies House PSC register
Ultimately controlled by WPP Jubilee Limited.
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- 04045180
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- Conquest Europe (UK) Limited
- 02548770
- WPP North Atlantic Limited
- WPP CP Finance PLC
- Newcrosse Limited
- WPP Kenneth Square Unlimited
- TNS Group Holdings Limited
- WPP Pension Trustees Limited
- WPP Group Holdings Limited
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- WPP US Investments Limited
- International Outdoor Systems LTD.
- WG Access Limited
- WPP MR UK Limited
- WPP Finance 2015 Limited
- Healthworld Holdings Limited
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- S.H.Benson(India)Limited
- WPP AMC Holdings.
- European Market Research Bureau Limited
- Npcomplete LTD
- Acceleration Emarketing 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
- Mark James Hinton-Jones Director · appointed 2025
- Pippa Burridge Director · appointed 2025
First-time vs portfolio directors
Portfolio (2)
- Mark James Hinton-Jones Director · appointed 2025
- Pippa Burridge 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
- 03364908
- Status
- Active
- Type
- Private Limited Company
- Edition
- Register edition compiled 4th October 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
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