Nurses say current conditions in the NHS are the worst they have ever experienced, the Royal College of Nursing has said.
In a separate move, 50 leading doctors have warned the prime minister that lives are being put at risk due to mounting pressures on the NHS.
Speaking to the BBC, Professor Jane Dacre, president of the Royal College of Physicians, said:
"Our members tell me it is the worst it has ever been in terms of patients coming in during a 24-hour period and numbers of patients coming in when there are no beds to put them in.
"And there are patients within the hospital who can no longer get home because of the difficulties there are in placing people in social care.
"Our members fear that patients' lives are at risk because they can't get round to see patients who aren't in the emergency and accident department or are waiting for results to come back."
A spokesman for the Department of Health responded: "Since just last year, we have 3,100 more nurses and 1,600 more doctors. We're also joining up health and social care for the first time and investing £10 billion to fund the NHS's own plan to transform services and relieve pressure on hospitals."
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