Other customers offering the Earnd upfront pay scheme to employees include JD Sports.
Lord Blunkett said: “I ceased to be a paid adviser to Earnd in February and had no responsibility for decisions reached by Greensill.”
He declined to say how much he was paid, what due diligence he did on Greensill before taking the role, or how he came to be involved.
Blunkett’s paid role in the Greensill empire may raise eyebrows in his native Sheffield, where jobs are at risk from the deeply connected Gupta steel business. Sanjeev Gupta’s Liberty steel is in a financial crisis having borrowed heavily from Greensill.