North London Breast Screening Service: https://www.london-breastscreening.org.uk/home.aspx
NHS Breast Screening (BSP) Programme: http://www.cancerscreening.nhs.uk/
Breast Cancer Care: http://www.breastcancercare.org.uk/
Breast screening leaflets can be downloaded from https://www.gov.uk/government/collections/breast-screening-information-leaflets The leaflets are also available in other languages.