A FORMER University of Huddersfield student has not eaten for six weeks in protest at being caged in Guantanamo Bay.
Omar Deghayes, 35, studied in Huddersfield in 1998 as part of a law degree, but now he is locked up without charge at the camp in Cuba.
He and fellow prisoners are rebelling against the troops who are holding them by refusing to eat.
News from the camp is sketchy, but it is said the detainees are weak but determined.
Mr Deghayes came to the UK from Libya with his family in 1986, six years after his trade unionist and lawyer father Ahmer was allegedly assassinated by Col Gaddafi's regime.
He was seized in the Pakistani city of Lahore in April, 2002, by armed intelligence officers, before eventually being transferred to Guantanamo.
His supporters claim it was a case of mistaken identity.
Today, thousands were descending on London to demand the British captives were either charged or released.
Before boarding her bus to the capital this morning, chairman of the Huddersfield Stop the War Coalition June Jones spoke of her fears for Mr Deghayes.
"He must be very weak at this stage. It is the second time they have gone on hunger strike this summer," she said.
"Last time they broke the strike when conditions improved, but as far as I am aware soon after they started again.
"At the march we will be asking the Government to listen and step in to sort this mess out. These people should be either charged and given a fair trial or released.
"We also want all our troops out of Iraq and will be using this demonstration to make that clear."
His family, who live in Brighton, are also expected to be on the march.
Clr Andrew Cooper, a supporter of the campaign to free Omar, has urged Foreign Secretary Jack Straw to pressure the American authorities.