Andy McNab, Chris Ryan and two other ex-SAS members have urged the prime minister to back calls to free him.

BBC: Sgt Danny Nightingale

But his words provoked an angry reaction from some veterans, including former SAS commando Andy McNab and Simon Weston, who suffered horrific burns in the Falklands War.

BBC: 'Extremists hijack' military name

Former SAS soldiers, including the authors Andy McNab and Chris Ryan, Mr Hammond and Patrick Mercer MP are among those who have called for the case to be reviewed.

BBC: Sgt Danny Nightingale to appeal against gun conviction