Postman Pat - Series 8 - Postman Pat's Spy Mission

Aided by his trusty cat Jess, Pat the postman always manages to deliver the mail, no matter what. It's a light day for post, so Pat offers to help Ted with his chores after Ted sprains his ankle. Charlie brings a radio he's built over to Julian's house and they start picking up strange signals including a message from 'Red Leader'. Could there possibly be a spy in Greendale?