NHS England publishes each quarter at the following link the number of elective operations cancelled by hospitals for non-clinical reasons on or after the day of admission:
The reasons for the cancellations are not collected.
The National Health Service should do everything it can to reduce cancellations and keep them to an absolute minimum. Where this is unavoidable, patients should receive treatment as soon as possible. This is reinforced by a pledge in the NHS Constitution for all patients who have operations cancelled, on or after the day of admission (including the day of surgery), for non-clinical reasons to be offered another binding date within 28 days, or the patient’s treatment to be funded at the time and hospital of the patient’s choice.
The number of cancelled elective operations as a percentage of admissions has remained at less than 1% in each of the last 10 years.