Answer: chimneysweep

AnswerCrossword Clue
CHIMNEYSWEEPOne who works with the flue
CHIMNEYSWEEPBert, in "Mary Poppins"
CHIMNEYSWEEPWhat Mr. Gamfield wanted Oliver Twist to be.
CHIMNEYSWEEPDick Van Dyke, in "Mary Poppins"
CHIMNEYSWEEPNot a job for a claustrophobe