EXCLUSIVE: UTA has signed writer and producer  Dominic Treadwell-Collins  for representation in all areas. “Treadwell-Collins is well-known for crafting high-stakes, culturally resonant television that commands massive global audiences, displayed in the smash hit  Rivals , which he showran, executive produced, and adapted from Jilly Cooper’s seminal novel,” the agency touts. The series, which explores 1980s sexual and racial politics, became Disney+’s biggest UK drama launch to date. Season 1 of  Rivals  won the International Emmy Award for Best Drama Series and two BAFTA wins. Additionally, he’s the founder of Happy Prince, a premier drama label under ITV Studios. Through his Happy Prince banner, Treadwell-Collins has curated a robust slate of British storytelling.…