Heathrow’s newly appointed chair has begun discussions with airlines and billionaire property developer Surinder Arora in an effort to calm a dispute that risks causing further delays to the £49bn proposal for a third runway at Europe’s busiest airport. Philip Jansen, who took up the role earlier this year, is believed to have met with major carriers and with Arora, who is promoting a rival £25bn expansion blueprint, to explore compromise solutions in an ongoing disagreement over costs and