Howard started acting in 2001 with his first role in educational TV show for youths called Looking After the Penneys as Scott Penney. He was a part of the final cast between 2005 and 2007 of the British TV series Dream Team, playing Gavin Moody, a young footballer. He then went to train at the prestigious London Academy of Music and Dramatic Art (LAMDA) between 2008 and 2011. In 2012, he was in the TV miniseriesTitanic as Sixth Officer Moody. He appeared as Sam Thawley, a young, handsome bar patron, on Series 4 of Downton Abbey.