Debbie is a well known author and speaker and an internationally recognised expert on genetic genealogy. She is an Honorary Research Associate in the Department of Genetics, Evolution and Environment at University College London. She is the author of two books: DNA and Social Networking and The Surnames Handbook. She has written widely about DNA testing both for the family history press and in academic journals. She has been interviewed about genetic ancestry testing for BBC Radio 4, appearing on You and Yours and The Business of Genetic Ancestry, and has also appeared on TV on the BBC programme Watchdog. She is often asked to comment on DNA stories for the UK and US press and has been cited in numerous publications including The Times, The Observer, New Scientist, The Atlantic and The Washington Post.