The parents of Charlie Gard are to find out whether they will be able to take their child for trial therapy in the US.
The 11-month-old, who is brain-damaged and suffers from a rare genetic condition, has been the subject of a ongoing legal battle.
His parents Chris Gard and Connie Yates seek to bring him to America to undergo an experimental medical trial, but specialists at Great Ormond Street Hospital say it will not help, arguing life support should be withdrawn.
Gard and Yates have already taken their battle to all of Britain’s major courts, as well as the European Court of Human Rights in Strasbourg – all of these battles were lost.
Today (Thursday July 13) they are back in the High Court to launch the next stage of their legal fight.
The couple want Mr Justice Francis, who ruled in favour of the Great Ormond Street doctors in April, to conduct a fresh analysis of their case.
In a preliminary hearing on Monday, Francis said he would consider any new evidence and announced the hearing for today in the Family Division of the High Court.