Billie's clients include Hay Festival, National Theatre Wales, The National Trust, The Big Lottery Fund, Country Living, The Canal and River Trust, The Brecon Beacons National Park Authority, the Poets' Society, Faber, various magazines/publications, and galleries, schools/colleges. Her photos regularly feature in The Guardian, The Times, and The Telegraph.  

She also takes commissions for family portraits, weddings, and parties, where her natural, informal style sets her apart from the standard approach to these occasions.