A review into how the NHS handles complaints is due to be published.
Led by Cynon Valley Labour MP Ann Clwyd, the government-backed report was set up in the wake of the scandal at Mid Staffordshire NHS Foundation Trust.
Ms Clwyd publicly protested last year about the poor care her late husband received while in hospital. She told the BBC he had died "like a battery hen" at the University Hospital of Wales in Cardiff.
More top news
Hangovers cannot be prevented, even by drinking water or eating after boozing, scientists have concluded.
Striking rail workers and engineering works are set to cause a headache for many Britons travelling over the bank holiday weekend.
An eight-year-old boy has been caught on camera going for a joyride with two other young children in the car.