Professor Hugh Pennington, who chaired a public inquiry into the 2005 outbreak, said the system meant consumers could have "trust in the business that's based on actual evidence in front of their eyes".

BBC: Food Hygiene Rating Bill backed in Welsh assembly vote

Last week the public inquiry into the scandal concluded patients had been "betrayed" by a system that put corporate self interest ahead of patient safety.

BBC: Probe into 'high death rate' hospitals extended

The report, which then led to a public inquiry due to be published later this year, sent shock waves through the system and has ushered in a new culture of accountability and whistle-blowing.

BBC: Analysis: Why are doctor complaints rising?

Across 1, 781 pages, the public inquiry into the Stafford Hospital scandal has forensically set out what is wrong with the NHS system.

BBC: Where next for the NHS?