Todd joins Leo Burnett in the same role and will work across a range of key clients including The Co-operative, which the agency won last year.
At JWT, Todd was behind the award-winning Golden Skins "ginger boy" and MTV anti-drink-drive "idiot" work. He led the agency’s successful £40 million Baileys pitch and Army contest.
Between 2001 and 2004, Todd worked at Saatchi & Saatchi, where he was a senior copywriter and creative director. At Saatchis, he won gold and silver Cannes Lions for his Coco de Mer work.
Todd said: "I’ve had 18 fantastic years with [partner] Adam [Scholes], but now it’s time for a new challenge."