The role will see him work across the company’s retail exhibitions, which include Pure London, Spring and Autumn Fair and Glee.
Leese spent three years at Media 10, and has worked with companies spanning the entertainment, events and publishing sectors. He has been shortlisted for 19 awards across the events sector in the past 18 months, and taken home three.
Commenting on his appointment, Leese said: "Our retail shows are market leaders and have long been highly successful events.
"I am excited about launching new, product-led initiatives and powerful content programmes to enable our customers to grow their businesses, which will be at the heart of our strategy."
Louise Young, divisional director retail at i2i Events, added: "We are delighted to welcome Saul to the retail division. His valuable experience across design, marketing and events will be a great asset to the team, taking our retail brands to the next level in their development."