Gemma Lowery, the mother of Bradley, met the Government in a bid to get a treatment, which could have helped her son, available on the NHS.
Six-year-old Bradley died last year after a fight with Neuroblastoma - a rare type of childhood cancer. Today would have been his seventh birthday.
Gemma argued the case for Dinutuximab Beta, a blood treatment, to become available on the NHS at a meeting, in London, with the Health Secretary Jeremy Hunt and pharmaceutical companies.
NICE, the body which approves NHS drugs, has insisted the treatment is currently too expensive and its long-term effects aren't known.