When Hywel was diagnosed in 1970, his likelihood of long term survival was poor.
Dr Tom Jones, Hywel’s father, said, “Hywel was diagnosed at the age of three and died six years later.
"His treatment was incredibly harsh and he had a really hard time of it. Back then fewer than 10% of children survived - most of the other children we met on Hywel’s ward died.
“We started fundraising for what was then Leukaemia Research Fund just a few months after he was diagnosed – to us it was our one way of ‘hitting back’ at this terrible disease.
"Looking back on the 40 years after Hywel was first diagnosed, it’s wonderful to know that 90% of children now survive the most common form of leukaemia. It’s a tremendous relief to know that we’ve reached this point.”