The worst performing practice nationally is in West Yorkshire, where on average half of patients are unable to get a GP appointment in 24 hours, research found.
The Informatics Department at Queen Elizabeth Hospital showed that 38% of the practice's patients chose to go to A&E at the local hospital instead.
The best performing practice is in Barnsley where all patients got a GP appointment within 24 hours and only 2% of the practice’s patients chose to go to A&E at their local hospital.
ITV's Tonight programme spends 24 hours in an A&E department to investigate the crisis that led waiting times to a nine-year-high in April
The NHS deals with over 1 million patients every 36 hours, here is a look at the facts and figures behind the NHS.
An investigation into urgent care showed that people who couldn’t easily get an appointment with a GP went to A&E instead.