In the video, Mr King told how they had wanted to leave the hospital because the NHS could not fund the proton beam treatment that they wanted for their son. 'We couldn't take it any more - not knowing and not being able to question anything in fear that they say, "Sorry Mr and Mrs King, emergency protection order, you're no longer allowed in the ward",' he told the camera. 'Under that stress, our son has grade four brain tumour, we couldn't discuss or question them at all in fear that our son would be in that ward all day long by himself without his parents being able to come in. 'We couldn't be under that system any more. I was going to get the money to pay for the proton beam therapy but they have prevented that now because the Spanish police are involved and I can't do want I wanted to do.' 'But straight away afterwards he went into what's called posterior fossa syndrome, which means very limited moving or talking or doing anything.' He continued: 'Proton beam is so much better for children with brain cancer. 'It zones in on the area, whereby normal radiation passes right through his head and comes out the other side and destroys everything in his head.