Costessey Town Council member Gary Blundell. Picture: BRITTANY WOODMAN - Credit: Archant Renewed calls are being made for a second exit from a large housing estate after a gas leak caused gridlock. The leak happened around 1.30pm on Thursday on Alex Moorhouse Way, Costessey, near the Longwater Retail Park, after a workman hit a gas main on the ambulance station. It is not known if anyone was injured and the ambulance service has been contacted. At around 4pm Norfolk Police were directing traffic one lane at a time into and out of the estate but the cordon remained in place around the ambulance station, according to Costessey Town Council member Gary Blundell.