We followed with interest the news that some 450 000 women did not receive an invitation for breast screening at age 68–70 due to a computer glitch. According to Hansard, Jeremy Hunt, the Secretary of State for Health and Social Care, announced “PHE [Public Health England] analysis of trial data from the service found that there was a computer algorithm failure dating back to 2009. The latest estimates I have received from PHE is that, as a result, between 2009 and the start of 2018 an estimated 450 000 women aged between 68 and 71 were not invited to their final breast screening.”1