Dr Levy from the Royal College of Physicians said that "doctors, patients and their families failed to recognise life-threatening danger signs of asthma".
Asthma patients are dying needlessly as a result of poor care, a damning new report has found. Some 1,242 people died from asthma in 2012.
The below video by BUPA shows what happens when a person gets asthma and how it can be prevented:
The review said: "It might be that in these cases people were complacent about their asthma and we feel that the majority of these people did not know what to do - they did not recognise the danger signs they did not know how or when to call for help."
He said that three quarters of those who died did not have a personalised asthma plan which would have provided them with this information.
Charity Asthma UK said that prescribing errors were detected in 47% of the deaths studied.
There are 5.4 million people in the UK who suffer from the condition.