blackmore was then employed by d'oyly carte to coach the company's professional understudies in their roles. he was appointed as d'oyly carte's stage manager for the 1922–23 season, but, coming into "uncomfortable conflict with the artistic temperament", he was replaced the following season by frederick hobbs. after leaving the stage, blackmore taught voice and coached actors in 'operatic stage craft' in the london-based 'g & s school of opera', which he founded with his wife, describing himself in advertisements for the school as the 'principal tenor and sm' with d'oyly carte.