Meet Our Expert Team of Global, Sector Specialist M&A Advisors

At SI Global, our greatest asset is our people. We are a team of dedicated M&A advisors and corporate finance experts who understand exactly what it takes to successfully build and sell a company in the Marketing, Tech Services and Consultancy sectors.

Our advisors possess specific expertise in the digital economy. We have dedicated teams for Marketing Agencies, Consultancies, and Tech-Enabled Services. This sector-focus allows us to provide the nuanced advice necessary to navigate complex deals and secure premium valuations from our global network of acquirers and investors..

Partners in Your Success

Choosing an M&A advisor is one of the most significant decisions a founder will make. You need a partner who acts not just as a broker, but as a trusted extension of your board. We guide you through every stage of the transaction, from early business exit planning to the final negotiation table.

Whether you are looking for a sell-side M&A advisor in London or need global representation to reach international buyers, our team’s track record demonstrates our ability to deliver results. Explore our Deals page to view our transactions

Graham Harkness

Director

Graham joined SI Global in 2024 bringing over 15 years of corporate finance experience from both advisory and corporate roles across financial services, technology and industrials. He has led the full deal lifecycle of acquisitions and divestments, closed 8-figure equity and debt fundraises and project-managed complex, cross-border integrations across APAC, Europe and the US.

Beginning his career with Baker Tilly in the UK, Graham moved to Singapore in 2011 where he co-owned a boutique advisory firm servicing corporate and small-cap fund clients across APAC. In 2016, he sold his business to Private Equity-backed Vistra (a BPEQT portfolio company) going on to take up regional roles in Singapore, New York and Hong Kong. More recently, Graham led corporate development at advanced manufacturing multinational, Hi-P International and was Head of Strategic Finance at Betterplace, a Series C technology company operating across Asia and the Middle East.

Graham holds professional qualifications with the Institute of Chartered Accountants Scotland, the Corporate Finance Institute and the Institute for Mergers, Acquisitions and Alliances.

Joe Hine

Partner

Jack Mehigan

Partner

Tristan Rice

Partner

Alyssiah Tsui

Partner

Alistair Angus

Chairman

Rosie McKeith

Director

Julia Vargiu

Director

Michael Chin

Director