The Chancellor has refused to apologise for attempting to introduce "upsetting" cuts to disability benefits before doing a U-turn on the plans.
George Osborne insisted he had listened to and learned from concerns about the cuts to the personal independence payment (PIP) and dropped the proposal.
But he did not accept former shadow chancellor Chris Leslie's invitation to say sorry for the mistake which left a £4.4 billion hole in the Budget.
Mr Osborne has taken the unusual step of opening the final day of debate in person so that he could respond to widespread concerns following ain Duncan Smith's dramatic resignation from the Cabinet.
George Osborne is due to defend his Budget in parliament today following the government u-turn on welfare cuts.
Mayor London weighs in on Iain Duncan Smith's resignation and the abandoned disability payment cuts on ITV's The Agenda tonight.
MPs wonder aloud whether the chancellor is 'too scared' to respond to an emergency question over his budget.