Justin King

Former CEO of Sainsbury’s, Non-Executive Director of M&S, Chair of the Board of OVO Energy, Former MD of Hypermarkets for Asda & Named one of Management Today’s Most Admired Business Leaders

Justin King’s Biography:

Justin King is one of Britain’s most respected business leaders, best known for transforming Sainsbury’s during his tenure as Chief Executive Officer. Widely recognised for his acclaimed “Make Sainsbury’s Great Again” strategy, Justin tripled profits and delivered an 85% shareholder return while leading the retailer through one of the most successful periods in its history. As one of the youngest CEOs in FTSE 100 history, he has built a reputation for driving growth, improving customer experience, and delivering sustainable business transformation. Today, he is a sought-after speaker on leadership, retail, consumer behaviour, business management, growth, and scaling organisations.

With more than three decades of experience in customer-facing businesses, Justin began his career as a Graduate Trainee at Mars Incorporated in 1983. He progressed rapidly, becoming Sales & Marketing Director for PepsiCo in the Middle East in 1989 before joining Grand Metropolitan, now Diageo Plc, in 1990, where he led the launch of Häagen-Dazs in the UK as Managing Director. He later joined Asda as Managing Director of its Hypermarkets Division before becoming Head of Food at Marks & Spencer in 2001. In 2004, Justin was appointed CEO of Sainsbury’s, where he led a remarkable turnaround and oversaw twelve consecutive quarters of sales growth.

Justin’s contributions to business have been widely recognised. He was awarded a CBE in 2011 for services to the retail industry and was named one of Management Today’s Most Admired Business Leaders in 2013. He also received an Honorary Doctorate from Bournemouth University in recognition of his achievements. Throughout his career, Justin has become known for his expertise in customer-centric leadership and organisational transformation.

Beyond executive leadership, Justin has held numerous influential board and advisory positions. He has served as Vice Chairman of Terra Firma, Interim Chairman of the Manor Marussia F1 Team, Director of Wyevale Garden Centres, Non-Executive Director of Marks & Spencer, and Non-Executive Chairman of Itsu Grocery. He has also played an important role in supporting charitable initiatives, helping strengthen Sainsbury’s partnership with Comic Relief and championing the company’s Paralympic Games sponsorship. Today, he continues to influence businesses as Chair of the Board of OVO Energy, Chairman of Allwyn Entertainment and Dexters, and Advisory Board Member of Boxfund VC and Nuud.

Why Hire Justin King?

Justin offers audiences a rare combination of frontline retail expertise, boardroom leadership experience, and proven business transformation success. Drawing on decades of experience leading major organisations and advising high-growth businesses, he shares practical insights into customer loyalty, organisational change, strategic growth, and leadership under pressure. His engaging speaking style combines real-world lessons from some of the UK’s most recognisable brands with actionable takeaways for leaders seeking to improve performance, build resilient organisations, and create customer-focused cultures that deliver long-term success.

Justin King‘s Career Highlights:

Here are some of the key milestones that define Justin King’s remarkable career:

• 2024 – Appointed Advisory Board Member of Boxfund VC and Nuud, supporting innovation and business growth.
• 2024 – Became Chair of the Board of OVO Energy, helping guide one of the UK’s leading energy companies.
• 2023 – Appointed Non-Executive Chairman of Itsu Grocery, overseeing strategic development and expansion.
• 2022 – Became Chairman of Allwyn Entertainment Ltd and Dexters, providing leadership across multiple sectors.
• 2019 – Joined the Board of Marks & Spencer as a Non-Executive Director.
• 2016 – Appointed Director of Wyevale Garden Centres, supporting business strategy and governance.
• 2015 – Served as Vice Chairman of Terra Firma while also becoming Interim Chairman of the Manor Marussia F1 Team and joining PwC’s Public Interest Body.
• 2013 – Named one of Management Today’s Most Admired Business Leaders for his impact on British business.
• 2011 – Appointed Commander of the Order of the British Empire (CBE) for services to retail.
• 2004 – Appointed Chief Executive Officer of Sainsbury’s, leading a transformational turnaround that tripled profits and delivered an 85% shareholder return.