The world’s largest advertising holding company, has reported pre-tax profit of £709.7 million in the first half of 2014, up 44.5 per cent year-on-year. Revenue was reported at £5.84 billion, up 6.4 per cent in constant currency, in the six months to 30 June 2015. In its 2015 interim statement, WPP said: “To survive in […]