The NHS is to pay for five-year-old brain tumour patient Ashya King's proton beam therapy treatment in the Czech Republic.
His parents Brett and Naghemeh King sparked an international police hunt after they took their son out of Southampton General Hospital and travelled to Prague for the treatment which was not available for him on the NHS.
The father of Ashya King has claimed British doctors warned the family not to question his treatment or they would "take him away until he was 16".
Brett King told the Daily Mirror doctors at Southampton General Hospital told him they would "take my son away" if he questioned them over the five-year-old's treatment for brain cancer.
“Eleven years without us, he wouldn’t know his parents, his brothers, his sisters or anyone. We couldn’t question them any more," Mr King said.
University Hospital Southampton NHS Foundation Trust declined to issue an official statement, the newspaper added.
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.