Born in Edinburgh, David Eustace served with the Royal Navy and worked as a prison guard at Barlinnie before returning to education, graduating in Photographic Studies at Edinburgh Napier University. He worked in London as a masthead contributor at Condé Nast publications and moved to New York in 2001, after which point he collaborated with some of the world's most respected brands. In 2008 Eustace was the only non-US citizen asked to participate in USA Network’s Character Project. The following year, Eustace launched Anthropologie’s Who Inspires Us? arts initiative and, with his daughter Rachael, created the body of work In Search of Eustace. Anthropologie asked him to create another portfolio the following year, which saw him return to Scotland where he produced Highland Heart. In 2011 he received an Honorary Doctor of Arts for his contribution to photography from Napier and in 2015 became Chancellor at the same institution. Also that year he became the first photographer to host a main gallery exhibition at The Scottish Gallery and has exhibited with the gallery most years since including, prior to lockdown in March 2020, his Dear John portfolio.