New model army

T-shirt and jeans are de rigueur for Silicon Valley men but the must-have in the London tech scene is a handkerchief in the breast pocket of a natty suit. Oath’s Stuart Flint and Nigel Clarkson both rock the hankie look. Google’s Matt Bush also got in on the act at the recent Think with Google event. Diary is counting on Clarkson to adopt a monocle and top hat next. Got a diary story? Email us at campaign.diary@haymarket.com