Company
Tesaro UK Limited
Tesaro UK Limited is an active UK company (number 07890847), incorporated 2011, with 4 current directors including Demet Gurunlu Russ and Laura Guittard. 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 17
- Jill Dawn Anderson 2023-2024 View profile
- Ciara Martha Lynch 2020-2022 View profile
- Jerome Charles Maurice Andries 2019-2023 View profile
- Andrew Philip Pierpoint Miles 2019-2020 View profile
- Richard John Latchford 2019-2020 View profile
- Jerald Michael Korn 2019-2019 View profile
- Marc Christian Bauer 2018-2019 View profile
- Timothy Robert Pearson 2017-2019 View profile
- Joseph Lawrence Farmer 2017-2019 View profile
- Asad Mohsin Ali 2016-2018 View profile
- Orlando Manuel Correia Monteiro De Oliveira 2016-2019 View profile
- Boris Donatien Maxime Javelle 2016-2019 View profile
- Jennifer Ann Jackson 2015-2020 View profile
- Richard Joseph Rodgers 2012-2013 View profile
- Tanya Nicole Lewis 2012-2015 View profile
- Mary Lynne Hedley 2011-2017 View profile
- Moulder, JR., Leon O. 2011-2017 View profile
Directors and secretaries as filed at Companies House.
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About
- Incorporated
- 22/12/2011
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.
- GSK Finance (NO 2) Limited
75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06
Group
- Tesaro UK Limited
is controlled by GSK Finance (NO 2) Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register - GSK Finance (NO 2) Limited
is controlled by Glaxosmithkline Finance PLC
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2018-12-12 · source: Companies House PSC register - Glaxosmithkline Finance PLC
is controlled by Glaxosmithkline Holdings Limited
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register - Glaxosmithkline Holdings Limited
is controlled by GSK PLC
Evidence
active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register
Ultimately controlled by GSK PLC.
86 other companies in this group
- Smithkline Beecham Legacy H Limited
- Smithkline Beecham Overseas Limited
- GSK LP Limited
- Setfirst Holdings Limited
- Stevenage Bioscience Catalyst
- Glaxo Laboratories Limited
- Smithkline Beecham Senior Executive Pension Plan Trustee Limited
- Glaxosmithkline IHC Limited
- Smithkline Beecham Marketing and Technical Services Limited
- Stiefel Laboratories (Maidenhead) Limited
- GSK Equity Investments NO2 Limited
- Viiv Healthcare Finance Limited
- Charles Midgley Limited
- GSK Finance (NO 2) Limited
- Glaxosmithkline Caribbean Limited
- Burroughs Wellcome International Limited
- Smithkline Beecham Pension Trustees Limited
- Stiefel Laboratories Limited
- Glaxosmithkline Mercury Limited
- Setfirst Limited
- Dealcyber Limited
- GSK Finance (NO.3) Limited
- Viiv Healthcare UK (NO.5) Limited
- Viiv Healthcare Finance 2 Limited
- Wellcome Consumer Healthcare Limited
- Glaxo Wellcome UK Limited
- Glaxosmithkline Intellectual Property Management Limited
- Glaxosmithkline Intellectual Property Limited
- Mixis Genetics Limited
- Glaxo Group Limited
- Allen & Hanburys Limited
- Glaxosmithkline Intellectual Property Holdings Limited
- Smithkline Beecham (Export) Limited
- Glaxosmithkline Intellectual Property Development Limited
- Viiv Healthcare Trading Services UK Limited
- Viiv Healthcare Finance 1 Limited
- Clarges Pharmaceuticals Limited
- Glaxo Trustees Limited
- Glaxosmithkline International Limited
- Glaxochem (UK) Unlimited
- Viiv Healthcare Limited
- Tres Cantos Open LAB Foundation
- Viiv Healthcare UK (NO.3) Limited
- Glaxosmithkline Intellectual Property (NO.5) Limited
- Eskaylab Limited
- Glaxosmithkline Intellectual Property (NO.2) Limited
- Viiv Healthcare UK (NO.4) Limited
- Cellzome Limited
- Smithkline Beecham (SWG) Limited
- Smith Kline & French Laboratories 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
- Laura Guittard Director · appointed 2022
- Demet Gurunlu Russ Director · appointed 2024
First-time vs portfolio directors
Portfolio (2)
- Laura Guittard Director · appointed 2022
- Demet Gurunlu Russ Director · appointed 2024
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
- 07890847
- 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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