[2] In October 2013, weeks into Clarke's third and final year at the upper school, he was offered a position at the Royal Ballet.
[2] In the 2015/16 season, Clarke and Federico Bonelli co-created the role of Samuel Jean Pozzi in Wheeldon's Strapless.
[3] In January 2020, Clarke was promoted to first soloist, shortly before he filled in for Vadim Muntagirov as the titular role in Cranko's Onegin, alongside Natalia Osipova's Tatiana.
[12][13] In June, during the COVID-19 pandemic, Clarke and Fumi Kaneko danced the second movement pas de deux from MacMillan's Concerto for an online performance.
[15] In March 2022, Clarke appeared in a gala benefitting the Disasters Emergency Committee (DEC) Ukraine Humanitarian Appeal at the London Coliseum, performing Balanchine's Tchaikovsky pas de deux with Núñez.
[16] Two months later, he danced in Royal Ballet's special performance of Swan Lake, also to raise fund for DEC, in which the lead roles were split among several dancers.
[21] In May 2022, the Royal Ballet announced Clarke's promotion to principal dancer, which took effect at the start of the 2022/23 season.