Guantanamo victim backs by-election stand.
And the Birmingham Muslim human rights activist has urged the Shadow Home Secretary to join his campaign to highlight prisoners locked up without charge in Britain and abroad.
Mr Begg, who was incarcerated by the American authorities for three years without charge, said: "What David Davis has done is very interesting and is commendable."
Mr Begg, originally from Sparkbrook, added: "It is good that the spotlight is being put on this issue of 42 days but we have to hope that the Lords does the right thing and throws the legislation out.
"What we have to remember is that the Government originally wanted 90 days without charge, which stinks and brings back memories of the type of things going on in Ireland."