The 33-year-old star said being on stage was not a life-long dream to make it his profession, reported Contactmusic.
"I enjoyed it growing up but it was only when I was about 18 or 19 and did a production of 'Cabaret' at the Edinburgh Festival that I knew I wanted to make acting my career," he said.
And Redmayne still feels like a "kid play-acting" and compared making movies to going on holiday.
"The odd thing about this profession is that you still feel like a kid play-acting. There's this sense of make-believe and wonder to it that stays with you.