Anne Laura Dorinthea McLaren DBE. 26 April 1927—7 July 2007

Anne M c Laren DBE was born into a privileged family, which affected her future in two distinct ways. Her cut-glass accent and social confidence were advantageous reminders of this early privilege, but her unrelenting rejection of it was evident in her left-wing egalitarian political and social views and actions. Anne was among the pioneers of research into mammalian development—her experiments on embryonic and fetal development in mice led indirectly to ‘test tube’ babies and contributed to our understanding of the relative roles of soma and germ cells in generating the two sexes. However, it is not only her science for which she will be remembered; her social, educational, ethical and political activities in the cause of science were paramount. She was an articulate, logical and extraordinarily confident speaker, always unrelentingly focused and thoroughly prepared. These qualities made her a formidable member of the Warnock Committee of enquiry, which generated the internationally influential guidelines on how human-assisted reproduction should be regulated. She served for 10 years with distinction on the Human Fertilisation and Embryology Authority, the UK regulatory body that resulted from the Warnock enquiry. She was a founder member, and president, of the Association of Women in Science and Engineering. Her interests extended beyond human welfare to that of animals, and she became involved with conservation and biodiversity preservation programmes internationally. She was elected Foreign Secretary of the Royal Society, the first woman to hold this office in its 332 years.