Watch Chris' inspirational video diary of his operation in America and his transition from wheelchair to walking unaided.
Our reporter Sangeeta Kandola went to meet Chris Brittain and Beau Brown in September last year - best friends, both have cerebral palsy.
Beau, from Weybridge, recently received an operation in American to help him walk. Chris meanwhile, from New Haw in Surrey, is still waiting for enough money to be raised to pay for a similar operation.
Chris Brittain - who suffers from Cerebral Palsy - underwent a life changing operation in America earlier this year enabling him to walk independently.
Now the plucky 7 year old is planning a sponsored run for 3 year old Vigo Koritsas who suffers from the same condition.