In the newly created role Walmsley will head up the group's digital arm Euro RSCG 4D Digital as well as spear-heading and developing integrated activity for the business.
Walmsley, who starts work for EHS Brann this month, spent over a decade at AKQA in a range of roles having joined the digital agency in 1998 as a strategist Most recently he held the role of principal consultant after spending four years at the network's San Francisco and New York offices as director of strategy.
Mike Spicer, group managing director at EHS Brann, said: "The talent and experience that Craig brings with him from AKQA is a powerful complement to our already solid team.
"It's fantastic that someone with Craig's pedigree has chosen to come and work with us in the EHS Brann Group."
Walmsley, said: "EHS Brann is working towards a truly ambitious goal -- a genuine fusion of direct, data, and digital capabilities.
"As all media become digital, and customers continue their inexorable move online, we will be uniquely well placed to build lasting customer relationships."