Briers, who has also held senior roles at TBWA\Manchester, becomes group business director at the Dentsu Aegis Network-owned agency.
He will be will be responsible for developing partner relationships and driving performance across some of Carat Manchester’s key clients.
Briers said: “Following five successful years at PHD, I am genuinely thrilled to be joining an agency with such depth and breadth of talent.
“With the skills and resource available through Carat and the wider Dentsu Aegis Network North I look forward to delivering significant business results for our clients, capitalising on the huge opportunities that exist across the media and communications landscape at this most exciting of times.”
MD Rachel McDonald added: “I am delighted to welcome Dani to the Carat Manchester leadership team. His appointment reflects our continued ambition to be pioneering in our industry by recruiting from diverse backgrounds.
“It is imperative for us as an agency to continue to deliver first-class service to our clients and I believe Dani’s depth of experience will help us further develop our client centred ways of working, demonstrating Carat’s commitment to setting industry standards for our clients.”