 In February 2014, he left his role at Oldham to join the Bahrain national football team as their new national team goalkeeping coach.In October 2014 Mimms was appointed as goalkeeping coach at Premier League side West Ham United.After leaving West Ham, he had short spells coaching at Blackpool and Bolton Wanderers and in November 2016 joined the coaching staff at Hull City following goalkeeper coach Gary Walsh's move to Aston Villa.