FTP, who is this British composer best remembered for his oratorio Belshazzar's Feast?
His middle career saw critics of his Cello Concerto for Gregor Piatigorsky label him a reactionary, and his popularity never recovered, though his late output including a Passacaglia for Violincello Solo for Rostropovitch and an adaptation of Chekhov's The Bear, are considered original.  Possibly the best remembered piece from his later career is his Variations on a Theme of Hindemith, but his highest success came with his Crown Imperial March, after which he was hailed as the successor to Elgar.  FTP, who is this British composer best remembered for his oratorio Belshazzar's Feast?
His middle career saw critics of his Cello Concerto for Gregor Piatigorsky label him a reactionary, and his popularity never recovered, though his late output including a Passacaglia for Violincello Solo for Rostropovitch and an adaptation of Chekhov's The Bear, are considered original.  
Sir William Turner Walton