The parents of Ashya King have been told they can take him to the Czech Republic to seek proton treatment for his brain tumour.
The family are expected to be taken to Prague by private jet after the High Court approved a treatment plan.
Ashya, five, became the focus of an international hunt police hunt when his parents, Brett and Naghmeh King, took him from a hospital in Southampton last week to travel to Spain, hoping to continue to the Czech republic.
Mr Justice Baker approved a the plan after speaking on the telephone to lawyers representing Mr and Mrs King and Southampton General Hospital, Hampshire.
In pictures: Ashya King's case
In pictures: Ashya King's case
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Brett King, back left, and Naghemeh King, right, accompany their son Ashya King (5) center, as he arrives for pre-cancer treatment examinations at the Motol hospital in Prague, Czech Republic
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Ashya King (5) arrives for pre-cancer treatment examinations at the Motol hospital in Prague, Czech Republic
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Brett King, father of five year old Ashya King, talks to members of the press after holding a press conference at his lawyer's office in Seville, Spain
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Brett and Naghemeh King, parents of Ashya King, attend a press conference in Sevilla, Spain. The British parents are heading to see him at a hospital in southern Spain following release their from custody after United Kingdom authorities dropped accusations of child cruelty against them
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British couple Brett (L) and Naghemeh (2L) King leave Soto del Real Prision in Soto del Real, near Madrid, Spain
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Brett King leaving Soto del Real prison near Madrid, Spain after British authorities dropped the case against him and his wife for taking their son Ashya from Southampton General Hospital without the consent of doctors
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Naghemeh King leaves Soto del Real Prision in Soto del Real, near Madrid, Spain
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Ashya King in hospital with his mother
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Journalist work outside the Materno Infantil Hospital where Ashya King is hospitalized in Malaga, Spain
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Ethan Dallas and Sanjay Ganatra, friends of the family, deliver a petition of over 100,000 names calling for his parents' release from a Spanish jail
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Spanish judge Ismael Moreno arrives to the National Courts to take statement to the parents of Britain's five-year-old boy Ashya King, in Madrid, Spain
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Ashya King parents's lawyer, Juan Isidro Fernandez Diaz, arrives at the National court in Madrid
AP Photo/Andres Kudacki
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Spanish policemen stand guard as a police van carrying the parents of Ashya King arrives at the courthouse in Madrid
JAVIER SORIANO/AFP/Getty Images
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Ashya King’s parents after their court appearance
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Ashya King's father explained why he took his son to Spain in a video uploaded to YouTube
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This photo of Ashya King being examined by doctors in hospital was posted on Facebook by his brother, Naveed
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Ashya King and his brother Naveed
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Ashya King on a hospital bed
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A CCTV still issued by Hampshire Police of Ashya King with his father Brett King at around 4pm yesterday
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The exterior of Southampton General Hospital where Ashya King, who has a brain tumour was taken by his parents from the hospital without the blessing of doctors
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Hampshire Constabulary said there are 'serious concerns' for the life of Ashya King as he needs constant medical care. Officers said his parents - Brett, 51, and Naghemeh, 45, - boarded a cross-Channel ferry from Portsmouth to Cherbourg at 4pm yesterday with Ashya's six siblings
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Ashya King, who has a brain tumour and was taken by his parents from hospital without the blessing of doctors
However, doctors in Southampton are understood to have said the proton treatment is unlikely to have any benefits over the treatments that would be available in the UK.
Having left Southampton with Ashya last week, Mr and Mrs King were arrested in Spain on an international warrant after British police raised the alarm.
They were released from custody after a public outcry at the way the authorities were behaving, with supporters including Deputy Prime Minister Nick Clegg who was critical of their arrest. The couple were reunited with their sick son when prosecutors withdrew the arrest warrant.
Portsmouth City Council, which has responsibilities for Ashya's welfare, launched family court litigation - asking for directions about the youngster's treatment – and Mr Justice Baker began analysing issues surrounding Ashya's treatment at a hearing in the Family Division of the High Court on Tuesday.
The judge was told - on Tuesday - that Mr and Mrs King wanted their son to receive proton beam radiotherapy.
A lawyer representing bosses at Southampton General Hospital said doctors aimed to provide chemotherapy but not proton beam. Vikram Sachdeva said such treatment could not be provided in Britain.
More details on Mr Justice Baker’s ruling are expected to be released in court on Monday but he said that Ashya - who is currently in hospital in Malaga, Spain - could be taken to the University Hospital Motol in the Czech Republic.
He said he had been told that specialists at a Czech proton therapy centre had considered a treatment plan and that he had been presented with evidence showing Mr and Mrs King could afford the cost of treatment and transport.
The judge said he would cease to have responsibility for Ashya once the youngster arrived at the Czech hospital.
A spokesman for University Hospital Southampton NHS Foundation Trust said: "Today's judgment will allow Ashya to get the treatment he urgently needs without any further delays.
"Throughout the period that we cared for Ashya and over the last few days, our only interest has been his health, medical treatment and welfare. We will continue to support any clinicians involved in his future care with advice and information."Reuse content