A High Court judge has given Charlie Gard’s parents less than 48 hours to prove an experimental treatment works, while taking a sideswipe at Donald Trump for interfering in the case.

The baby’s parents, Chris Gard and Connie Yates, grew more and more distressed and upset during the hearing, interrupting lawyers to accuse Great Ormond Street Hospital, which is treating him, of lying.

In one impassioned plea, Miss Yates, 31, said: “He is our son. Please listen to us.”

Mr Gard, 32, said in an another interruption of Great Ormond Street’s lawyer: “When are you going to start telling the truth? They are lying to you.”

At the end of the hearing Mr Gard walked out and punched the wall in frustration.