
Phil Pemberton
Co-Founder
Phil Pemberton co-founded Pemberton Stewart with partner Aaron Stewart in 2007. Phil services a core group of clients, including tier-one investment banks, multi-billion AUM hedge funds and family offices. He has a track record of completing strategic senior mandates at C-suite level, global and regional head level. Phil also drives the membership and connectivity of Pemberton Networks.

Byron Rienstra
Chairman
Byron Rienstra joined Pemberton Stewart in 2017 as CEO, and moved to the role of Chairman in 2019. Prior to joining Pemberton Stewart, Byron was HR Director for Functions and Structural Reform at Barclays. Before that, he was Group Head of Talent, Learning and Culture at Standard Chartered Bank.

Claire Sutton
CFO
Claire is ACCA qualified and works as Head of Finance for Pemberton Stewart.
Claire has experience in a variety of finance roles. Prior to working with Pemberton Stewart, Claire’s roles included external audit, Internal Auditor for a FTSE 100 company and Management Accountant for a large Insurance company.
Global Markets team

Andrew Westmacott
CEO
Andrew joined Pemberton Stewart in Hong Kong in 2009 to focus on building up the Global Markets business in into a market-leading practice Asia Pacific. He took over as CEO in 2019. Andrew began his career in Executive Search in 2005 in London having graduated with a BA in History from the University of Manchester.

Will Brocks
Partner
Will is a Partner and part of the Global Markets business focusing on Fixed Income and Currencies across APAC and Europe. Will joined Pemberton Stewart in Singapore in 2014. Will began his career in Search in 2006 working in London and Singapore.

Fraser Jarrett
Fraser works in the Global Markets team focusing on Fixed Income Trading, Sales & Structuring.
Before joining Pemberton Stewart, Fraser studied a degree in Oceanography at the University of Southampton.

Cameron Hamilton-Patel
Cameron works in the Global Markets Team where he focuses on Asia EM Macro across Sales, Trading and Structuring.
Before joining Pemberton Stewart, Cameron completed a Chartered Manager Degree Apprenticeship at the University of Wolverhampton with a first-class degree in Business Management.

Emily Chapman
Emily works in the Global Markets team and has a focus on Credit across Sales, Trading and Structuring.
She joined Pemberton Stewart in 2021. Previously she worked coordinating international UXO disposal projects for the UN. Emily graduated from Royal Holloway University with a degree in History.

Chang Liu
Chang works in the Global Markets Team, focusing on Fixed Income Sales, Trading & Structuring in Greater China.
Prior to joining Pemberton Stewart, Chang worked for Huawei UK and a London Stock Exchange listed fintech company in London. BA in English Literature, MA in Applied Linguistics.

Aayush Datt
Aayush works in the Global Markets Team where he focuses on FIC across Sales, Trading and Structuring.
Before joining Pemberton Stewart, Aayush completed a Master of Science Degree in Financial Technology at The University of Gloucestershire achieving a Distinction.

Thomas Long
Thomas works in the Global Markets Team, with a focus on Fixed Income Sales, Trading & Structuring.
Before joining Pemberton Stewart, Thomas completed a Degree in Business Management & Marketing at Nottingham Trent University.
Global Banking & Energy Transition team

Tom Gregory-Smith
Partner
Tom has led Pemberton Stewart’s Global Banking & Energy Transition Team since 2009, focusing on senior level executive search appointments across Asia-Pacific, EMEA and North America across both the Financial Services and Energy Transition sectors.
Tom has a BA in History from the University of Leeds, and divides his time across London and APAC.

Delilah Acworth
Prior to joining Pemberton Stewart she worked for Octopus Energy in Wellington, New Zealand. Delilah graduated from the University of Bristol with a degree in English and Theatre.

Ammaar Abbasy
Ammaar is a member of the Global Banking & Energy Transition Team based in London.
Prior to joining Pemberton Stewart, he worked as an Industrial Analyst at Heidrick & Struggles, where he specialised in Energy Transition, Oil & Gas, Chemicals, Automotives, Aerospace and Mining. He has completed searches in the UK, The Americas, UAE, Netherlands, France and South Africa.
Ammaar was awarded a BA with Honours in History, Politics and Economics from University College London (UCL).
Global Commodities team

William Brocklehurst
Partner
William Brocklehurst runs the Global Commodities practice. He leads and executes senior front office searches for trading houses, financial institutions and industrials across Asia, Europe and the US. William joined Pemberton Stewart in Asia and has been integral in establishing the firm as the commodities search leader for the region, while managing our Singapore office.

Giles Krempels
Giles is an Associate Director in our Global Commodities team specialising in senior hires across Crude Oil & Oil Products, Gas & Power, Carbon & Environmental Products, LNG, Ferrous & Non-Ferrous Metals and Agriculture.
Prior to joining Pemberton Stewart Giles worked for a UK Tax and Wealth Management business in Singapore for over 7 years building a personal client base of GBP50M under his advice and management.

Milford Koh
Milford is a member of the Global Commodities team at Pemberton Stewart, where he specializes in senior-level hires within Crude Oil & Oil Products, Gas & Power, Carbon & Environmental Products, LNG, Metals, Iron Ore, and Agriculture sectors. He brings with him a wealth of experience gained from his prior role at Storm2, where he focused on senior hires within the FinTech space.
Milford holds a degree in Economics & Finance from RMIT University.

Sky Koh
Sky is a member of the Global Commodities team at Pemberton Stewart, where he specializes in hires across Crude Oil & Oil Products and Gas & Power. Prior to joining Pemberton Stewart, he was a Principal Consultant with The Edge Partnership and Storm2, focused on senior hires within Banking and FinTech space.
Sky holds a degree in Aircraft Systems Engineering from SIT University.

Hong Kong
Pemberton Stewart International Ltd.
E.A. Licence No. 65751
Room 403, Lap Fai Building
No. 6-8 Pottinger Street
Central, Hong Kong
Singapore
Pemberton Stewart (Singapore) Pte
E.A. Licence No. 23S1533
9 Raffles Place
Level 6, Republic Plaza 1
Singapore 048619
London
Pemberton Stewart UK Ltd.
8-10 Hill Street
London
W1J 5NG