It was during the school's production of Jekyll & Hyde last year that Dean Rickman felt he had to return.
"Seeing the energy, vibrancy and talent of not just the students, but staff as well left me feeling eager to re-join this large and diverse school community," he says.
Dean Rickman was chaplain at St Paul's from 2001 to 2004 and he's never lost contact with the school.
"I've stayed connected through the collegians network and I was a member of the Board of Trustees. I also have two sons there and a daughter to come in a few years' time," he says.
"We feel extremely fortunate to welcome Revd Rickman back as our school chaplain. He understands the school well, has superb pastoral and guidance skills, relates well to young people and will prove a powerfully positive influence in our school chapel services," says St Paul's headmaster Grant Lander.