Gareth David-Lloyd is a Welsh actor whose career began in the early 2000s. His debut was in an episode of Absolute Power in 2003. He went on to have one-time roles in Casualty, The Bill, and Rosemary and Thyme. From 2006 to 2009, he gained recognition for starring as Ianto Jones in the British sci-fi series Torchwood. He reprised his role in 2 episodes of Doctor Who. In 2010, he portrayed Dr. John Watson in the film Sherlock Holmes. In the 2010s, he had guest appearances in Warehouse 13, Holby City, and Waterloo Road. In 2016, he starred in the movie Dark Signal. As of 2018, he plays the recurring character of Joshua Bowers in Casualty.