I'd urge anyone thinking about breast cancer screening to first listen to an amazing lecture given by Prof Michael Baum at UCL recently, "Breast cancer screening: the inconvenient truths". (on Utube or at Prof Baum's website)
We shouldn't have to find out about the risks and actual value of screening for ourselves - why is it acceptable to give women selected and IMO, misleading information and then recommend testing up to a govt-set target? Men are not treated this way and it is equally unacceptable to treat women like children - no one has the right to keep me in the dark and risk my health. Respect informed consent for women!