Stop politicians and police depriving Ashya King from having his parents with him in hospital

Why does Portsmouth Hospital tell Mr & Mrs King there is nothing more they can do for their son, and then have them arrested for having the 'cheek' to not give up, and seek treatment elsewhere.

Proton beam treatment (which is what they want for their son) has already been shown to work in similar cases, and given other children their life back. Why should Ashya be stopped from having the treatment if his parents want to pay for it abroad, just because the UK is still behind in this technology and don't want to admit it.
If you want to know why he needs this treatment look at: http://www.proton-therapy.org/howit.htm,
maybe the Judge hearing the extradition proceedings would do well to read a bit too, before separating Ashya by even more distance from his loving parents.