The parents of young cancer sufferers now expect to be offered the same treatment as Ashya King , one of his doctors has said . Clinicians are in an ‘ impossible situation ’ as a result of the King family ’ s flight to Spain after disagreeing with doctors who were treating him in the UK . Doctors and nurses who treated Ashya King have criticised his parents while speaking out for the first time in a BBC documentary . Scroll down for video . Clinicians in an ‘ impossible situation ’ as a result of King family ’ s flight to Spain after disagreeing with doctors . Ashya was being treated in Southampton when his parents took him from the hospital and fled abroad without telling staff last year . They ignored medical advice and took him to Prague for proton beam therapy , ultimately paid for by the NHS Trust after he left the UK . Paediatric intensive care consultant Dr Peter Wilson told the documentary : ‘ It does put clinicians in an impossible position because we now have to try to explain to families why one child ... is getting a form of treatment , why they can ’ t and they ’ ve got the same tumour . 'That ’ s deeply unfair when the NHS is supposed to be about equal healthcare for all. ’ After fleeing the UK , the Kings were arrested in Spain and spent several nights in custody after an international arrest warrant was issued against them . Ashya was made a ward of court by Portsmouth council before a national outcry led to their release . His parents Brett , 51 , and Naghmeh , 46 , wanted him to have cutting-edge proton beam therapy instead which is thought to be less harmful . Because it is so highly targeted they claimed it could avoid healthy tissue , particularly tissues and organs behind the tumour . The family then went to Prague for proton beam therapy , and now say there is 'no evidence ' of a tumour . A High Court judge approved the move to take Ashya to Prague for proton beam therapy . The NHS later agreed to fund Ashya ’ s treatment in Prague . In March , four months after the proton treatment ended , Brett King told a national newspaper a recent scan showed ‘ no evidence ’ of the tumour . But cancer experts have told the BBC although it appears Ashya is in remission it is far too early to say he has been completely cured . Speaking to the documentary , staff at the hospital said they had been viciously attacked in the wake of the story . Dr Wilson said : ‘ As soon as the story broke , and it became a story of a hospital who was chasing down a family , we were inundated . Paediatric intensive care consultant Dr Peter Wilson said it was 'deeply unfair when the NHS is supposed to be about equal healthcare for all ’ that he had to say no to parents wanting proton beam therapy for their children . ‘ At one stage , especially on the Monday , our switchboard was basically shut because of the number of phone calls we were receiving ; the number of messages that were left ... vitriolic messages for everybody . ‘ The overwhelming sentiment was one of just an absolute outpouring of hatred . One of the letters said they wished my children got cancer and died. ’ Paediatric oncology consultant Dr Ramya Ramanujachar , also involved in Ashya ’ s treatment , warned the case could set a worrying precedent . She said : ‘ I don ’ t think the parents can look after their own child with a brain tumour and be not only the carers but also the professionals directing , managing and dictating their child ’ s treatment . ’
Doctors and nurses have criticised Ashya 's parents in BBC documentary . Consultant warns case - which saw parents ignore medical advice to take Ashya to Prague for proton beam therapy - could set a worrying precedent . NHS agreed to pay for Ashya 's treatment , and family now say he is cured .