The NHS is at a "watershed moment" and cannot deliver required levels of care within the current funding it receives, Health and Social Care Secretary Jeremy Hunt has been told.
It comes after A&E waiting times were published, revealing the true extent of the crisis at West Midlands NHS trusts.
Heart of England reported its worst A&E performance in more than two years last month - with nearly a quarter of patients waiting more than four hours.
The Royal College of Surgeons said it was "disappointing" that just 77.3% of patients at major A&E departments were treated within four hours, worse than in December 2016 when 79.3% of patients were seen.
A spokesman added: "It further demonstrates why it has been necessary to cancel patients' non-urgent procedures until the end of January.
"Despite the best efforts and dedication of NHS staff to treat patients quickly, waiting times for non-urgent care have also deteriorated again in the past year."
This is the picture in our region:
Heart of England
Heart of England reported its worst A&E performance in more than two years last month - with nearly a quarter of patients waiting more than four hours.
Just 76.3% of people waited less than four hours from arrival to admission, discharge or transfer in the trust’s A&Es in December, the worst performance in the local area, and the trust’s worst performance since the performance measure began to be recorded monthly in June 2015.
Performance in December was down from 77.1% waiting less than four hours in December 2016.
Sandwell
Sandwell also reported its worst A&E performance in more than two years last month - with nearly a quarter of patients waiting more than four hours.
At Sandwell and West Birmingham, the figure was 78.6%, down from 84.2% in December 2016.
Dudley
Similarly, the figure in Dudley was worrying, with 78.9% waiting less than four hours from arrival to admission, discharge or transfer in the trust’s A&Es in December, down from 87.7% the year previously.
University Hospital
Conversely, A&E performance at University Hospitals Birmingham has been improving since a low of 73.2% in December 2016, with 89.8% of patients waiting less than four hours in December 2017.
Nationally
Across England, A&Es reported their worst A&E performance on record in December, as 85.1% of patients waited less than four hours from arrival to admission, discharge or transfer, the worst monthly performance since records began in August 2010.
The number of people waiting more than four hours topped 300,000 for the first time as well, the equivalent of one in seven people attending A&E. This was an increase of 11.9% compared to 268,818 in December 2016.
Performance compared to 88.9% waiting less than four hours in November, and 86.2% in December 2016, with the 95% target missed for the 29th month in a row, according to the figures released this morning by NHS England.
