Former Blackstone Senior Managing Director, Stephen Lewis, to join Prosek Partners as Partner in London office

He will join Prosek’s Global Partnership to lead Communications and Public Affairs in London

London, UK—14 January 2025—Prosek Partners, a global integrated marketing and communications firm for financial and professional services, today announced that Stephen Lewis will join the firm as a Partner in its London office at the end of January. His focus at Prosek will be on corporate communications, financial communications, special situations work and corporate affairs.

Jennifer Prosek, Founder and Managing Partner of Prosek Partners, said: “I have known Stephen for many years, and have come to respect and admire him as a leader, communicator, advisor and friend. His experience at Blackstone could not be more relevant to our firm, and I am thrilled to welcome him to the partnership.”

Over the past 30 years, Prosek has grown to nearly 400 people across nine offices, including a more than 40-person team in London. The firm has been consistently ranked #1 in the US/Americas for M&A deal volume and #3 globally by Mergermarket in its quarterly M&A Rankings, #1 in The Deal’s 1H24 Private Equity Rankings, Best PR & Communications Firm by Hedgeweek & Private Equity Wire’s European 2024 Awards, and a PRWeek Best Place to Work, among many other accolades.

“I’ve admired Jen and the business she has built for many years. Prosek’s culture, entrepreneurial energy, amazing people and dominance in the global financial markets are all reasons I have decided to join the firm,” said Lewis. “I couldn’t be more excited to begin the entrepreneurial chapter of my career, and to bring my experience from multiple sectors to Prosek.”

Lewis has had a dynamic career, beginning as an actor and then joining HM Treasury, where he worked for six years in a number of different roles. Since leaving HM Treasury, he has held a variety of senior positions including Director of Communications at KPMG, Director of Strategic Communications at Barclays and most recently, Head of Corporate Affairs, EMEA at Blackstone and Chief Corporate Affairs & Brand Officer at BT.

About Prosek Partners
Prosek Partners builds – and protects – the top brands in business. We are a certified Woman-Owned Business and among the largest independent, integrated communications and marketing firms globally. Specializing in providing a full range of communications solutions to financial and professional services companies, Prosek delivers business impact through an unexpected level of passion, creativity and marketing savvy. Services include media relations, thought leadership, social and digital media, public affairs, investor relations, financial communications, transaction services, crisis communications and issues management, content creation, conference support, publishing, media training and more. Prosek’s strategic branding and integrated marketing arm – Prophecy by Prosek – offers brand strategy, award-winning design, digital and advertising capabilities. Prosek has been named PRWeek’s Best Place to Work, PRovoke Media’s “Global and North American Financial Agency of the Year” and a top-five global M&A and shareholder activism agency. For more information, please visit www.prosek.com or follow the firm on LinkedIn.