The family of the British surgeon, Mr Khan, who was found dead in his Syrian cell, on the day of his release by the Assad regime, have criticised the British government's handling of the affair accusing the Foreign Office of abandoning him.
Speaking to the BBC, Mr Khan's brother, Dr Shahnawaz Khan said, "I believe the British government have failed my brother."
"They've abandoned him. Other government's such as the Germans in particular, were very quick to get their citizens out. The British government didn't do anything.. I am to this day unaware of any single act the British government and the Foreign Office enacted that led to any change on the ground."
Mr Khan, an orthopaedic surgeon, went to Northern Syria over a year ago to assist in the humanitarian effort, was arrested within 48 hours of arriving by the Syrian authorities and detained in a military prison, where he was repeatedly tortured and held in solitary confinement.
A day before his promised release, believed to be ordered by President Assad himself, the prison authorities informed his family that he was found hanging in his cell, in an apparent suicide.
The UK Foreign Office said Mr Khan's death was "at best extremely suspicious", whilst the Foreign Office Minister Hugh Robertson said Mr Khan was "in effect murdered" by the Syrian authorities.
Speaking about his brother's time in detention, Dr Khan said that following extensive lobbying by the victim's mother who lives in Syria, he was eventually moved from a military prison into a civilian one.
"Everything that happened was because of my mother," said Dr Khan.
"The brave efforts of a housewife. That's what the entire intellengsia within the Foreign Office.. all those dons from Oxford and Cambridge did nothing."