Gavin Mccann, Site manager CALA Ravensheugh Brae in Musselburgh. by Lucy Donaldson, Monday, July 19th, 2021 Gavin Mccann, Site manager CALA Ravensheugh Brae in Musselburgh. by Lucy Donaldson, Monday, July 19th, 2021 Gavin Mccann, Site manager CALA Ravensheugh Brae in Musselburgh.