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John White

Founder & Chief Investment Officer

Calibrate Partners

London, UK

John White
Edward White
Edward White & Co., LLP
Mark Whitehead
MMS Consultancy

John White’s Biography

John White is Founder and Chief Investment Officer of Calibrate Partners, where he manages the “Calibrate Master Fund”.

Initially a single-family office, Calibrate Partners has grown into a boutique finance house that provides clients with a curated service and exceptional risk management. The firm has three separate but complementary divisions: Wealth Management led by Co-Founder Michela Ferrulli; Hedge Fund; and Tax Advisory.

In addition to his work at Calibrate Partners, John also invests in early-stage company formation and works closely with Deep Science Ventures, where he is a director and capital provider for the group.

John created Calibrate Partners after retiring from his role as Partner and Hedge Fund Manager at GLG Partners, where he founded the award-winning “Alpha Select Hedge Fund” which became a flagship fund and generated exceptional returns for investors even during the financial crisis. During his time at GLG, John won the Euro Hedge Award for the best Long/short Hedge Fund, further recognition of his achievements as a first-class Hedge Fund Manager.

Prior to this, John ran the UK Equity trading division at Morgan Stanley and went on to run the European Equity Proprietary Trading division. As a former UBS Equity Derivatives Trader, John was well equipped to take on the role.

John is a supporter of the British Heart Foundation and Help for Heroes, and undertook a charitable parachute jump for the latter in 2014. He is also passionate about helping children through divorce and has campaigned before the House of Lords to change the law and recognise Parental Alienation as both a legally definable concept and a palpable issue.

In 2017 John completed a TRIUM Executive MBA at the London School of Economics, NYU Stern School of Business, and HEC School of Management.

In his spare time, John is a keen golfer and fly fisherman and a member of Wentworth Golf Club.

John’s Background

Calibrate Partners
Founder & Chief Investment Officer
Jan 2015 - Present
London, UK
Calibrate Partners is a boutique finance group providing wealth management, hedge fund and tax advisory services. Formerly Calibrate Law, they are also a multi-disciplinary practice.
Partner & Hedge Fund Manager
Jan 2004 - Feb 2014
London, UK
MAN GLG, formerly GLG Partners, is a leading hedge fund investment firm based in the UK.
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Board Positions

Deep Science Ventures
Non Executive Director & Investor
Dec 2016 - Present
London, UK
Deep Science Ventures collaborates with founders and invests in scientific innovation with the aim of scaling the impact of science globally.


British Heart Foundation
London, UK
The British Heart Foundation funds over £100 million of research each year into all circulatory and heart diseases and what causes them.
Help for Heroes
Fundraisier & Donor
Salisbury, UK
Founded in 2007, Help For Heroes is a charity that provides support and rehabilitation for the Armed Forces and their families. Since the establishment of the charity over 22,000 service personnel and families have benefitted.


Former hedge fund manager invests in law firm to challenge status quo
Jun 2018
John talks about his investment in Calibrate Law where his vision as a former hedge fund manager is to offer better family law services. He said “The value we create will be in the equity, not the profits. There is no exit strategy.”
The Times
Aug 2015
London, UK
John White discusses his retirement from GLG Partners, his future investment plans and his desire to help small and middle-sized businesses with funding.

Awards & Endorsements

EuroHedge Awards
Best Long/short Hedge Fund
London, UK
The EuroHedge Awards celebrate the achievements of investment bankers and firms. John was recognised for his achievements at GLG Partners and in 2009 won the award for best Long/short Hedge Fund.

John’s Education

TRIUM Global Executive MBA
Global Executive Master of Business Administration
2015 - 2017
HEC School of Management logo HEC School of Management logo
HEC School of Management
Executive MBA
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