Simplify the following text for a Grade 8 native English-speaking person.
Original: On 17 September 2010 Coronation Street entered the Guinness World Records book as the world 's longest-running television soap opera after the American soap opera As the World Turns had its final episode . Roache was additionally listed as the world 's longest-running soap actor .
Simplified: Coronation Street is the longest-running soap opera in the United Kingdom .