A female senior commander who defected from Isis has warned the three British schoolgirls who travelled to Syria in February will “never” be able to return to the UK.

The woman, who called herself Um Asmah, is one of the most high-ranking commanders to speak out after leaving the group and was interviewed by Sky News just days after fleeing Isis.

The 22-year-old told the network she met the teenagers from the border as part of her role introducing new recruits to life in the group’s self-declared ‘caliphate’.

Shamima Begum, Kadiza Sultana and Amira Abase are now under-going a four month training programme in its stronghold of Raqqa to prepare for “special missions”.

Um Asmah shook her head when asked if the girls would ever return home and said: “I think they will die in Syria or Iraq.”

Kazida Sultana, Amira Abase and Shamima Begum (Metropolitan Police)

Her comments came amid reports the three girls had contacted their families more than three months after disappearing. One of the girls said they were healthy and well, but had no intention if travelling back to the UK, according to ITV News. The remaining two are believed to have made contact with their families in east London via the internet.

Isis seizes Ramadi Show all 7 1 /7 Isis seizes Ramadi Isis seizes Ramadi Ramadi attack Ramadi, after fighting on Friday, was one of the army’s few strongholds Reuters Isis seizes Ramadi Ramadi attack 130,000 remaining inhabitants of Ramadi, an overwhelmingly Sunni city, have fled the fighting (AP) AP Isis seizes Ramadi Ramadi attack Iraqi security forces withdraw from the Anbar state capital, Ramadi, in defeat on Sunday, 17 May (AP) AP Isis seizes Ramadi Ramadi attack The last remaining Iraqi security forces defending their headquarters against Isis in the eastern part of Ramadi on 14 May Reuters Isis seizes Ramadi Ramadi attack Civilian belongings can be seen in an abandoned truck during fighting in Ramadi Reuters Isis seizes Ramadi Ramadi attack Civilians fled Ramadi as Isis advanced Reuters Isis seizes Ramadi Ramadi attack Thousands of civilians fled the Isis advance in Ramadi AP

She said the girls are not particularly well-known among Isis members because there are already a lot of girls from Britain, Germany and France living there. They were “happy” to be in Syria, she added, but were unprepared for what would be expected of them there. She said one of the girls was reprimanded for showing her face to a driver.

Veiled women walk past a billboard that carries a verse from Koran urging women to wear a hijab in the northern province of Raqqa (REUTERS/Stringer)

She claimed all three were groomed by Isis who she says has developed a structured system to target vulnerable young people, especially from overseas. "Isis is not stupid, they have educated people who know how to deal with (the) psychology of others, how to deal with the human being," she explained.

"They have ways to attract people - especially foreigners. Otherwise young British people wouldn't come and say they will change the flag on Buckingham Palace."