Superstar Puissance duo Guy Williams and Mr. Blue Sky continued form in the London International Horse Show Puissance, after topping the leaderboard for the third year in a row. The LeMieux Puissance proved an exhilarating finale to the end of the third day of the London International Horse Show 2023 Show. In total, 13 combinations contested the class with proven Puissance specialists including last year’s joint winners Guy Williams and Joseph Trunkfield in the line-up. The duo were also joined by first-timers such as 5* Eventer Gemma Stevens. The famous…