Brett King said his son became overwhelmed with happiness upon seeing his family for the first time since they were released from prison. Speaking as he left through the back door of the hospital with his son Danny, he said;
He couldn't breathe he was so happy. He was so pleased to see us. We're tying to be hopeful. Tomorrow I meet with the cancer specialist. He's not in such a good state as when we left him - spirit depressed since his parents left him. We'll do what it takes. Not much else to do.
Ashya King's parents told the Daily Mail they fled the UK after being told NHS treatments would leave him with life-long disabilities.
The head of the police force which applied for a European Arrest warrant against the parents of Ashya King has now urged their release.
A British mother whose son's life was saved by proton therapy has told ITV that she defied NHS doctors' advice to pursue the treatment.