The co-author of today's report into 'unacceptable' standards of care at two South Wales hospitals has told ITV News that it will be a "catastrophe" if all of the report's recommendations are not put in place by this time next year.
There are 14 recommendations to the Abertawe Bro Morgannwg University Health Board, and four to the Welsh Government - both organisations have accepted all of them.
There will be an independent review in 12 months' time to see how this action plan has been carried out - and Mark Butler said "this is such a clear plan of action that there is no excuse for this not making the significant improvement that is required in these hospitals."
Speaking to our presenter Jonathan Hill, he insisted the situation here is not the same as at Mid Staffordshire NHS Foundation Trust, where hundreds of patients are believed to have died because of poor standards of care over many years.
He said: "Mid Staffs was a catastrophic organisational failure. This is set of local problems that need to be supported out."