Quote:They were the British invasion with a sickening twist.

Four young Brits who joined the ISIS death cult were called ‘The Beatles” by their mates in madness and investigators believe they committed some of the most heinous crimes of the caliphate.

Now, the two surviving members are about to be extradited to the U.S. to face charges.

If convicted, it is almost certain they will be executed at the U.S. Federal Prison in Terra Haute, Ind.

Alexanda Kotey, 35, and El Shafee Elsheikh, 31, have been in custody since they were captured in Syria in February 2018.

One of the other members of their cell was notorious ISIS executioner Jihadi John, who was obliterated in an allied airstrike.

Intelligence sources believe the quarter acted as an execution squad for Islamic State, butchering scores of innocent civilians.

U.S. President Donald Trump described the pair as the “worst of the worst.”

American intelligence officials believe the men “participated in the detention, exploitation and execution of Western detainees.”