East Midlands Ambulance service made it to barely half its emergency calls on time during the late cold snap.
With the area blanketed by heavy blow in the week ending December 5, the service attended just 53.4 per cent of its most serious 999 calls within the eight-minute target time.
The bank said the extreme weather was the ground can the decrease in figures, which had been as eminent as 77 per cent during November.