Possible Clues:

• Radio station owner, e.g
• Landlord in silence turned key
• Landlord's silence worried last of clientele
• One holding official permission
• Seller of tie-in merchandise, often
• Authorized vendor
• One with permit to sell alcoholic drinks
• Person responsible for pub seen scurrying around after insects
• Pub landlord maybe ordered silence before start of Eurovision
• Person in charge of pub has insects -- any number, look!