Ben underwent a nine-hour operation because the plates in his skull had not fused correctly after birth.
The youngster, from Cannock, Staffordshire, was diagnosed with craniosynostosis when he was two years old.
Doctors warned his parents he may not survive the procedure to relieve pressure on his brain.
But a decade later and Ben, now 12 years old, has starred in all three Nativity films, alongside co-stars Martin Clunes, Catherine Tate and Ralf Little.
Last weekend he joined them at the premiere of Nativity 3, in London’s Leicester Square.
Ben, who plays ‘Bob’ in the films, underwent the complex operation at Birmingham Children’s Hospital when he was two years old.
Craniotosis, which occurs in one in 2,000 children, is a condition where one or more of the plates in an infant’s skull fuses too soon after birth.
It can cause pressure in the brain, which can lead to blindness, sleeping and eating problems, as well as problems with mental development.
His terrified family were told he may not survive, but Ben, who attends the prestigious Sylvia Young Theatre School in London, recovered.
He has since gone on to launch an acting career and win dance titles including European freestyle champion.