Experienced John Walden joins sushi group as chairman. In a press release YO! (formerly YO! Sushi) writes that Eric Nicoli, who joined the company as chairman in 2015 following the acquisition of the company by Mayfair Private Equity, is stepping down. Taking over is John Walden, who has more than 20 years experience of multi-channel, consumer-driven retailing. As well as advising businesses and private equity investors through Inversion, the US-based retail-focused management and strategy consultancy he founded 13 years ago, he has...