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.
More top news
The musical 'La La Land' has earned 14 Academy Award nominations, tying the record for the most bids received by a single film.
Oscars 2017: Watch the Academy Awards nominations live
Hull City midfielder Ryan Mason is making "excellent progress" after suffering a fractured skull at Chelsea.