Kaminkow joined Kantar Vermeer as global chief executive in 2016 and has spent the last few years at Kantar Consulting. Prior to Kantar, she was global chief marketing officer at Westfield and chief executive of Omnicom agency TracyLocke.

Kaminkow takes up the new role at the brand activation agency at the beginning of April. She replaces Steve Harding, who is leaving Geometry after six years in the chief executive role. Harding will remain with the business for a handover period until the summer.

Mark Read, chief executive of WPP, said: "Since Geometry was formed in 2013, Steve has led the company with passion and determination. I would like to thank him for his stewardship of the business, and for the central role he played in combining three separate entities to create a world leader in its field."

He added: "Beth Ann has done an exceptional job at Kantar Consulting and I am delighted that she will be taking up the CEO role at Geometry. It’s a real testament to the strength of our network and the talent we have across the business."