The forum is a free online service for brokers and marketing professionals and encourages industry debate and offers marketing advice.
Barrett is the first guru to be unveiled, with the other 16 gurus yet to be identified.
Julian Wells, director of Marketing Innovation Forum, says: “The criteria for being one of our gurus is simple – you must be a respected expert in your field, and we have to know and trust you.
“Like all of our gurus, Jonathan ticks these boxes and offers his experience, expertise and impartial advice to our members, free of charge.
“Our lead generation forum has had tremendous interest already and Jonathan’s advice has been consistently solid.”
Jonathan Barrett, head of sales at Leadbay, says: “Marketing Innovation Forum has proven that it creates valuable discussion about lead generation and marketing in general.
“The forum gives advisers the perfect place to ask any questions they have and helps us at Leadbay to get to know our customers as well as possible.”