In this study we use ONS cohort fertility data to compare the childbearing patterns of women completing childbearing without children, for three large cohorts, born in the last 100 years, resulting from birth spikes post WW1; WW2 and in the 1960s. We explore possible reasons for remaining childless and how these differ between the three cohorts and we project how the childlessness patterns observed will impact on the number of people reaching old age without children over the next 25 years.