Darwell-Taylor is moving to Big Picture - the agency founded by the former DLKW Dialogue chairman Simon Andrews - as a creative partner. The agency positions itself as developing big ideas that engage consumers and encourage them to agree to receive marketing activity. Its first client is Halifax.
Darwell-Taylor's exit leaves Arc Worldwide London without a permanent creative director for the second time in less than a year.
The founder of The Body Shop's creative department, The Creative Greenhouse, Darwell-Taylor joined Arc in January. He replaced the husband-and-wife creative team Graham Mills and Jack Nolan, who left the agency for personal reasons. They have joined Digitas in New York.
Arc's creative department will be led by the interim creative directors Aaron Martin and Garry Munns until a replacement for Darwell-Taylor has been found.
The pair report to Arc's managing director, Mike Spicer, who is in sole charge following the departure of John Quarrey, the chief executive for Europe, the Middle East and Africa, in September.