Visa is in advanced talks to relocate its European headquarters to London’s Canary Wharf, in a vote of confidence for the Docklands business district following a wave of recent tenant departures. According to people familiar with the matter, the global payments giant is preparing to take over approximately 170,000 sq ft of space at One Canada Square — the iconic 50-storey tower previously occupied by credit ratings agency Moody’s. Moody’s announced last year that it...