Previous studies have reported an overall lower breast cancer incidence in women from Asian and Black backgrounds compared with white women. Age standardised and age specific incidence rates in the largest specific ethnicities within Asian and Black groups are not reported. This important study uses data on population size and the age distribution of women in five ethnic groups of interest (white British, Black African, Black Caribbean, Indian and Pakistani) were extracted from the Office for National Statistics 2001, 2011 and 2021 census data for England.