Briers joins from TBWA\Manchester, where he recently headed up all non-food business for The Co-operative Group, including Financial Services, Funeralcare and Travel. During his ten years at TBWA, Briers also worked on a secondment at Jessops as its head of marketing.
PHD North's clients include Irn-Bru, for which it created the award-winning "Bruzil" campaign.
Daren Rubins, the chief executive of PHD UK, said: "This is a fantastic appointment and reinforces PHD North's positioning as the smartest media agency outside of London."
Briers said: "I'm delighted to be joining an agency with such a fantastic creative reputation. PHD North already has a strong talent base, and I look forward to developing the agency's potential."