Havas Media's chief insight officer will become a member of Newsworks’ leadership team and oversee the insight programme at the marketing body for national newsbrands.
During her career, Turner has worked at both full service and media agencies, including Leo Burnett, Starcom MediaVest Group, ZenithOptimedia and Bartle Bogle Hegarty, where she began her career.
Turner has received industry acclaim for research and planning over her career, most recently at the Media Research Group for her work at Havas Media on its "Meaningful Brands" positioning.
She was made a fellow of the Institute of Practitioners in Advertising in 2009 in recognition of her services to the industry and has co-authored a number of publications for the IPA, including the recently published ‘How to Evaluate the Effectiveness of Communications Plans’.
Turner said: "I have been fortunate to work at some of the leading agencies in town during my career.
"For the past 14 years I have had the immense privilege of building a world-class insight team at MPG/Havas Media and have had a fantastic time here.
"I am really excited to be joining Newsworks and thrilled to have the opportunity to play a part in the future of newsbrands."
Rufus Olins, chief executive of Newsworks, said: "I cannot think of anyone better qualified for the role at Newsworks.
"Denise is hugely respected and connected. She has a natural curiosity and an in-depth understanding of why people make the media choices they do.
"She also has a wonderful knack of making the complex simple. I am looking forward to working with her."