Jay James chats to Carl Marsh about his new appointment as the new host of a brand-new music, entertainment and celebrity-packed show on Nation Broadcasting’s five regional networks across Wales, which are on Sunday’s between 4 pm and 7 pm. You’ve been quite busy these last few years haven’t you, and now you’re the new prime time Sunday afternoon host on Nation Radio’s networks across Wales? Well, obviously I am still involved with the music side of things by working…