Burnham’s new chief of staff ran City firm advising Thames Water and rival Heathrow bidder Advisory Andy Burnham’s likely chief of staff will move to Downing Street from a lobbying firm that counts Thames Water and the rival bidder for Heathrow’s third runway as clients, just as ministers mull decisions that could decide both organisations’ fate. James Purnell is widely tipped to become Burnham’s most senior right-hand man should the Makerfield [...]