Buses are regular and stop right outside the entrance to Powderham Castle. You’ll need the No 2 Stagecoach bus from Exeter/Newton Abbot. Visit the Stagecoach website for exact times and routes.
Starcross Station is located at the back of Powderham Castle and it’s a 10 minute walk to the festival campsite. If you’re coming from further afield you’ll need to get your connection at Exeter St Davids.