Actually, I don't know if Orlando is an atheist. He attended St. Edmunds School in his native Canterbury. He is also part Jewish, and he joined the Nichiren Buddhist organization Soka Gakkai Int. People hear things, but they aren't always true.
That's a cult, the Buddhist equivalent of Scientology and Kabbalah ala Madonna
He is not Jewish. His father was not Harry Bloom, as his whoring mother had told him. He later found out that his mother cheated on her husband Bloom with a neighbor, who is Bloom's real father.