Professor Kefah Mokbel, a top breast cancer surgeon, claims that failing to take breast cancer screenings seriously could lead to hundreds of fatalities a year.
This comes after the reveal that 450,000 women were not being sent mammogram reminders.
"We have some of the worst survival and death rates for breast cancer in the western world" Professor Mokbel said.
"Genetically the populations are similar, so it’s down to how often you screen."
"We do not take breast screening in this country as seriously as others."
The five-year survival rate for breast cancer in Britain is behind countries such as Cyprus, France, Portugal, Sweden, the US and Costa Rica.
This might be due to screenings being held every 3 years in the UK compared to every 1-2 years in other countries.
Every woman aged between 50 and 70 and registered at a GP should recieve an automatic invitation to a screening.
However, many women may have had their lives unnecessarily shortened after disappearing from the system.