Here's the magical moment - and the wonderful smile when four year old Theo Sankson heard for the first time after ground breaking surgery.
For the first time on the NHS, brain surgery can be used to help those who can't have hearing aid implants. Theo is one of the first to benefit. It will now be routinely available on the NHS.
Two highly specialist teams at hospitals in Manchester and London will perform Auditory Brainstem Implants (ABIs) surgery for children who are deaf across the country.
The surgery is for children who are profoundly deaf, aged five or under, who are unable to use conventional hearing aids or implants because their inner ear (cochlea) or auditory nerve did not develop properly.
The highly complex procedure involves inserting a device directly into the brain to stimulate hearing pathways, bypassing the cochlea and auditory nerve that have not developed properly.