Kieran began using a camera as a teenager initially wanting to create images for people to hang on their walls. In 1993 he entered the world of photojournalism with the Reuters News Agency in London. As a staff photographer he covered major events like the Iraq war, the Asian tsunami, and the Troubles in Northern Ireland. His work with Reuters led to exhibitions in New York, Perpignan and London and publications in prominent magazines including Newsweek, Time, Stern and National Geographic.
In 2008 he resigned from Reuters to become a freelance again. He was commissioned by the BBC Natural History Cinematography Unit to produce a specialised stills tilt-shift time-lapse film for an episode in their upcoming new series ‘Human Planet’. The ‘Urban’ episode won an Emmy award for best cinematography in a factual based programme. From 2010 to 2011, Kieran documented the repatriations of British Service personnel from the war in Afghanistan through the small Wiltshire town of Wootton Bassett. This body of work was acquired in its entirety by London’s Imperial War Museum for its Contemporary War archive. His work is held in numerous private collections as well as the British Royal Household and UK Parliamentary archives. He won a World Press Photo award in 2015 for his humorous essay on the Wimbledon Tennis Championships. His recent body of work documenting life throughout the Covid 19 lockdowns ‘Keep Calm and Carry On’ received a Pictures of the Year International award in 2022. Kieran continues to focus on telling stories of human resilience.