Mark McCulloch, the highly regarded head of marketing at YO! Sushi, has left the company to join We7, the digital music streaming service. McCulloch had been with the privately-owned group led by Robin Rowland for just over two years and during that time the company had won a number of plaudits for its marketing, especially online, and won the Best Restaurant Website in the World title at the Webby Awards. Previous to joining the 58-strong restaurant operator, McCulloch was global senior brand manager at Barclaycard.