Possible Clues:

• Publicist
• The thing about plugging unlucky runs is who does the plugging
• He promotes guide touring heart of River Tyne
• One using time during break returned to do exams again after having raved excessively
• Traversed floating island for a job in promotions
• Someone making claim for product? It's averred to be false
• He announces drivers' tea break
• Promoter opposing resistance, overcoming this regularly
• Publicist arrived, set to get agitated
• Promoter and mentor keeping Egyptian leader right