It will hear from victims, senior bosses, and politicians.
His campaigning for compensation for wrongful prosecutions as a result of botched accounting software led to an ITV drama.
Liberal Democrat leader and MP for Kingston and Surbiton, Sir Ed Davey, was Post Office minister from 2010 to 2012.
He wouldn’t say if he had ‘regrets’ – but says he’s sorry he didn’t ‘see through the lies.’