It comes weeks after the Chilcot Report tore into Mr Blair, other leading politicians and senior officials over their actions before, during and after the conflict, in which 179 British service personnel died.
The group is led by Roger Bacon and Reg Keys, whose sons were both killed in Iraq. Mr Keys stood as an anti-war independent candidate against Mr Blair at the 2005 General Election.
“However, the long-awaited Iraq Inquiry (Chilcot) Report has confirmed that there were serious failings in the lead-up to, planning and conduct of the war, which led to so many unnecessary deaths.
The group is aiming to raise £150,000 in total to fund their lawyers, McCue & Partners – currently working free of charge – to fully analyse the 2.6 million-word report by Sir John Chilcot and prepare “a comprehensive opinion approved by expert senior counsel”.
It comes weeks after the Chilcot Report tore into Mr Blair over his actions during the Iraq conflict
Sir John also said the way the decision about the legal basis for the war was reached was “far from satisfactory”, but his report did not rule on the legality of the military action.
The Iraq War Families Campaign Group has launched the bid to raise £50,000 for Blair’s conviction
Mr Bacon added: “Our determination to find answers has been redoubled by Sir John’s excoriating view of the Establishment’s tragic and error-strewn display.
Matthew Jury, from McCue & Partners, said: “The report told us what went wrong and who was responsible but it was not a court of law. If they can, the families are determined to hold those individuals to account by bringing them to trial to answer for their actions.
Campaign launched to raise £150k for lawyers to prosecute Blair
“This is the families’ and the British people’s only chance for justice.”