Special has expanded its London team.

David Day has been appointed Chief Creative Officer and Partner. He joins Jennifer Black, CEO and Emily Harlock, CSO to form the partner team for the London agency.

Day will join the creative agency this fall. He is presently executive creative director at CPB London. His appointment comes as Special adds the pan-European account Mutti to its roster of clients, including Virgin, Speedo, Time Out and Asos.

Previously, he was creative director at Mother and ECD at Pablo London. Day also produced award-winning work for the BBC at Fallon London and worked as creative director at Wieden + Kennedy.

Black called him "a hugely talented and experienced creative leader, and an absolutely lovely human to boot."

Separately, Special New Zealand now has offices in Australia and the U.S. Clients across the group include Uber, PepsiCo and Virgin.