Sadistic parents, who tortured their children with safety pins, pincers and scalpel blades, have been deported from the UK, the Telegraph & Argus can reveal.

The 53-year-old man and 46-year-old woman, who were jailed for nine years and six years respectively, were sent back to their native Austria last month.

The couple, who carried out the cruelty while living with their children in Bradford, were imprisoned in 2008 after being found guilty at Bradford Crown Court.

The father was convicted of 11 charges of cruelty and wounding. His wife was found guilty of two charges of cruelty.

The couple cannot be named, to protect the identity of their children.

The man had still been in prison when he was deported, while his wife had been moved to a secure immigration centre.

Detective Inspector Vanessa Smith, head of safeguarding children in the Bradford district, yesterday confirmed both parents have been deported back to their native country.

A spokesman for Bradford Council added: “We can confirm we remain involved in supporting the children concerned.”

During a ten-week trial in 2008, a jury heard harrowing evidence from the boys, who were mutilated, bound and beaten at their home, from the ages of seven and nine.

The youngsters had safety pins fastened through their lips, their mouths were sliced with scalpel blades and the older boy had his tongue pressed with sharp pincers.

Their father would sew up the wounds to their mouths with a home medical kit.

The trial judge, Christopher Prince, told the man, a fanatical Christian preacher, he was “calculated, determined, persistent and cruel in the extreme”.

Judge Prince told the woman, also a Christian extremist, she chose to do nothing to protect her sons from their tyrannical father.

The prosecution said the man might have mutilated the boys as his interpretation of religious teaching.

But the judge told him: “It is no more than your self-delusion. You have sadistic tendencies and took pleasure in inflicting pain on your children.”

He told the mother it was almost impossible to comprehend how maternal instinct did not spur her into action.

The couple came to Bradford in 2003 from Nigeria, via Austria.

A Home Office spokesman said it did not not routinely comment on individual cases, but he added: "Those who come to the UK must abide by our laws.

“We will take all necessary steps to deport foreign criminals as quickly as possible and in 2012 we removed 4,500 foreign national offenders.”