The parents of a patient who died less than 24 hours after being discharged from Stafford General Hospital said they still have a long way to go before they see justice.
Frank and Janet Robinson's son, John Moore-Robinson, of Sileby, died in April 2006 after a mountain bike accident.
His parents said his ruptured spleen was not spotted at Stafford General.
In 2009, it emerged hundreds of patients could have died unnecessarily because of "shocking" levels of care in the hospital's accident and emergency department.
Yesterday Mr and Mrs Robinson, from Ellistown, were in the House of Commons to hear the result of a public inquiry into the hospital and David Cameron apologise to the families of patients.
Yesterday's Francis Report contained 290 recommendations and stated that patients suffered "appalling" conditions, but stopped short of naming an individual or group of individuals responsible for the shortcomings.
The Robinsons are among campaigners angry that no one has been punished for the problems at the hospital.
Mr Robinson, 61, said: "David Cameron apologised but I don't think an apology is enough."
Some campaigners have been calling for Sir David Nicholson, who is now chief executive of the NHS Commissioning Board, to resign as he was chief executive of the West Midland Strategic Health Authority, responsible for overseeing the hospital at the time of the problems.
The Robinsons are unhappy that Mr Nicholson is now in the "highest possible post in the NHS".
Mr Robinson said: "We haven't had a chance to fully digest the Francis Report at the moment, but we will.
"One of the recommendations was that there should be a legal duty of candour – a duty to be truthful to patients and the public. This has got to be implemented."
Mr and Mrs Robinson, with the help of North West Leicestershire MP Andrew Bridgen, are now campaigning to have a new inquest into John's death.
Mr Robinson said: "We have applied to the Attorney General for this and are going through all the processes.
"Mr Bridgen has been brilliant in fighting our corner but we are still travelling down the road for justice for John and there is a long way to go."
A new chief inspector of hospitals is one of the immediate changes announced by the Prime Minister in response to the independent inquiry, chaired by Robert Francis.
Other changes include proposals to suspend hospital boards for serious failures and an inquiry into hospitals with the highest mortality rates.
Mr Francis said: "The NHS can provide great care and the system and the people in it should make sure that it happens everywhere.
"The recommendations I am making represent not the end, but the beginning of a journey towards a healthier culture in the NHS where patients are the first and foremost consideration of the system and all those who work in it."
