Known as a mammogram, it involves taking X-rays of the breasts to find tumours.
As the screening occurs every three years, any signs of breast cancer between screenings should be checked out by a doctor.
“In some parts of England, the screening programme has been inviting women from 47 to 73 years old as part of a trial,” Cancer Research UK added.
Should breast cancer be detected, treatment will depend on the size of the tumour, whether it has spread elsewhere in the body, and the person’s health.