Keir Starmer has reshaped the Labour party almost unrecognisably in just three and a half years and has an entirely new team working on getting into power at the next election. These are the key people advising, influencing and masterminding the Labour leader’s effort to become prime minister. Many of them would expect to follow him into Downing Street, becoming the next cadre of chiefs of staff, special advisers and members of the No 10 policy unit if the public votes Starmer into the top job.