According to Government data, 24% of patients who needed urgent care in the U.K had to wait more than 4 hours.

The Guardian: 

A record low in A&E treatment performance by the NHS has prompted warnings that the health service is in an “eternal winter” as hospitals cannot cope with rising patient need.

Just 76.4% of patients needing urgent care were treated within four hours at hospital accident and emergency units in England in March – the lowest proportion since records began in 2010 and down on the 76.9% figure in February.

The average wait time for a patient needing urgent care in the U.S is less than 15 minutes.

The U.K has government funded healthcare.