A SONG calling for the release of Shaker Aamer — the last British detainee in Guantanamo Bay held without charge or trial — was launched yesterday to raise funds for his family.

Mr Aamer, 48, has never seen his youngest son, who was born in 2001 on the day he was abducted in Afghanistan while working for a charity and sold for a bounty to US forces.

He was tortured into making a “confession” before being detained in Guantanamo, Cuba, where he has been beaten and put in solitary confinement, according to human rights organisation Reprieve.

Out of the money raised from the 80p download, 25 per cent will be donated to his wife and four children who live in Battersea, south London.

The roots reggae track is performed by The Four Fathers, a band fronted by journalist Andy Worthington.

Mr Worthington said: “It is disgraceful that Shaker Aamer is still being held.

“His continued imprisonment ought to be source of shame for the Obama administration, and of embarrassment for David Cameron.”

The British government has been calling for his release since 2007 and Prime Minister David Cameron raised Mr Aamer’s case with President Barack Obama this year.

This is despite Mr Aamer being approved for release from Guantanamo by a military review board under George Bush in 2007, and by a high-level task force established by Obama in 2009.

Reprieve director Clive Stafford Smith says Mr Aamer is still imprisoned because he witnessed men being tortured by US and British agents while in US detention.