Kazuyuki Ishihara is a Japanese garden designer who has won many gold medals at the Chelsea Flower Show. His design for 2019 is an artisan garden, "Green Switch", whose theme is switching from the urban environment to a natural one. From Wikipedia
The Japanese designer's Cha no Niwa – Japanese Tea Garden earns top honors at the prestigious horticultural event, marking his 13th gold medal in two decades of participation.