Board of Directors

Bonnie Y Chan joined the LME as an Executive Director in March 2024, and is currently also HKEX Group Chief Executive.

Previously held the following positions within the Group:

• HKEX – Head of Listing and Head of IPO Transactions
• HKFE, HKSCC and SEHK – member of Disciplinary Committee
• Davis Polk & Wardwell LLP – partner

Qualifications:

• Bachelor of Laws (The University of Hong Kong)
• Master of Laws (Harvard University, US)

John Williamson is the Chairman of the London Metal Exchange, Chairman of the UK Tote Group and a Non-Executive Director on the board of Pacific Basin Shipping Limited. He is a Chartered Accountant, a Chartered Fellow of the Securities Institute, and a Senior Fellow of the Hong Kong Securities Institute. He was formerly a Non-Executive Director on the Board of HKEX, LME’s parent company (2008-2021) so has extensive knowledge of LME’s business and markets; and has previously served on the Boards of the Hong Kong Securities Institute and several other private companies.

Mr Williamson has worked within the finance and securities industry for over 40 years and has deep expertise across commerce, investment banking, wealth management, IT, risk, governance and regulation in capital markets. He previously held senior executive roles with Search Investment Group, Morgan Stanley, NatWest Securities and Wood Mackenzie & Co.

Mr Williamson sits on the board of a mental health charity and is a strong advocate of the diversity and inclusion agenda.

Matthew Chamberlain is the Chief Executive Officer of the London Metal Exchange and a member of the Management Committee of HKEX Group.

Mr Chamberlain joined the LME in 2012, having advised HKEX on the acquisition of the LME while at UBS. He started his career at Citibank, and holds an MA from Trinity College, Cambridge.

Harriet Hunnable joined the LME Board as an independent non-executive director in February 2025.

Ms Hunnable is an experienced advisor and independent non-executive director with extensive regulatory and financial markets experience, including market integrity and markets in transition issues. Harriet started her career in the treasury unit of NM Rothschild & Sons bank.

Later, Ms Hunnable moved into fixed income, currencies and commodities roles at Merrill Lynch, UBS and Macquarie Bank, before becoming a managing director at Chicago Mercantile Exchange running the metals business line. From 2016 – 2020 she led the Financial Conduct Authority’s work on benchmark policy. She has also been a member of a number of financial benchmark oversight boards and policymaking bodies over the last decade.

Ms Hunnable's current roles include independent non-executive director at The Cambridge Building Society and independent expert to the Integrity Council for the Voluntary Carbon Market. 

Nigel Dentoom joined the LME Board as a Non-Executive Director in July 2023. He is also the CEO of Metdist Enterprises Ltd. Mr Dentoom has over four decades experience in the financial and physical metal markets, having held leadership roles in a number of LME member firms, physical trading operations in refined metal and concentrates, the junior mining space and exchange trading platforms.

Mr Dentoom has served on the boards of more than 30 companies – principally in the physical commodity and derivatives markets – in Executive, Non-Executive and Chair capacities, including having served on a number of LME advisory committees, most recently on the LME User Committee and the LME Copper Committee.  He is currently a member of the US Copper Club.

Relevant former positions:

CEO and Non-Executive Director of CCBI Metdist Global Commodities UK Ltd (2016-2018)

Independent Non-Executive Director of Sucden Financial Ltd (2011-2014)

Executive Chairman of LN Metals International Ltd (2002-2012)

CEO of Mocatta Base Metals (1987-1996) and Group Chief Executive of The Mocatta Group (1996-1998)

Nicholas Allen was appointed as a non-executive director of the London Metal Exchange in February 2023. Mr Allen is also been an independent non-executive director of HKEX since 2021 where he hold the positions of HKEX Audit and Risk Committee member, and deputy chairman of Listing Appeals Committee at the The Stock Exchange of Hong Kong Limited.

Other major offices Mr Allen holds include:

• Mordril Properties Limited - independent non-executive director (2019~)
• CLP Holdings Limited * - independent non-executive director (2009~)

 

Pierre Vareille was appointed as independent non-executive director at the London Metal Exchange in February 2023.

Mr Vareille has extensive experience of the metals sector both as an executive and non-executive, across the full value chain. He was formerly CEO of Constellium, a global aluminium products manufacturer; and Wagon, a car parts manufacturer. He previously worked for both Pechiney and Alcan, gaining in-depth experience of aluminium processing. He is currently Vice Chairman of the Board of Vallourec S.A. and Verallia S.A., both listed in France; and sits on the Board of Outokumpu, which is listed in Finland. From 2017 until 2019, he served on the Board of London-listed Ferroglobe, one of the world's leading suppliers of silicon metal, silicon-based and manganese-based speciality alloys.

Mr Vareille has a Masters in Engineering from the École Centrale Paris, and a Masters from the Institut d'Études Politiques de Paris.

Richard Leung joined HKEX in October 2011 and is currently the Group Chief Technology Officer. In his position, Mr Leung is responsible for the technology strategy and operations in Hong Kong, London and the Chinese mainland. He leads the technology effort across the Group to ensure the development and operations efforts are coordinated and the engagement with the vendors is optimised.

Mr Leung has worked with exchange and financial sector technology over the past three decades. Prior to joining HKEX, he was the Chief Technology Officer for Chi-X Global. Mr Leung joined Chi-X Global in conjunction with Chi-X Global’s 2008 acquisition of Cicada. Prior to joining Cicada, Mr Leung held a 14-year career with Dow Jones Telerate in the Asia Pacific region, where he served in various senior technical positions.

Richard Wise joined the LME Board as a non-executive director in May 2023.

Other positions held with the Group:
HKEX Group Chief Risk Officer
HKFE, HKSCC and SEHK – chairman of Disciplinary Committee

Past offices:
Credit Suisse AG – chief risk officer, Asia Pacific (2016-2020)
JP Morgan Chase – global head of market risk management (2012-2016)
JP Morgan Securities LLC – chief risk officer (2012-2016)
JP Morgan (1995-2012): global head of equity risk management (2007-2012), regional head of market risk management, Asia Pacific (2004-2007), head of risk management (1999-2004), and fixed income proprietary trader (1995-1999)

Qualifications:
Bachelor of Arts (Mathematics) (University of Cambridge, UK)

Bio to follow.