Born: 22nd January 1993 (as Thomas Lawrence Knight)
Episodes Broadcast: 2007-2011

Tommy Knight was born in Chatham, Kent and became interested in acting from a young age. He made his West End debut in 2001 with a production of Medea, and earned his first television credit the following year on TV To Go. Knight was soon appearing in shows like Casualty, The Impressionists, The Bill and Doctors. He was then cast as Luke Smith in Invasion Of The Bane, the 2007 pilot episode for the Doctor Who spin-off The Sarah Jane Adventures. Knight appeared in all five seasons of the show, although his character was gradually seen less frequently to accommodate the demands of the actor's education. He also made two cameo appearances in Doctor Who, first in the 2008 season finale, The Stolen Earth / Journey's End, and then in David Tennant's swansong as the Tenth Doctor, The End Of Time, on New Year's Day 2010.

In 2012, Knight made his film debut in the horror movie Stitches. The same year, he joined the cast of Waterloo Road; he remained on the show until 2015, during which time he was also a murder victim on Glue. Knight next had a regular role in Victoria, starring former Doctor Who companion Jenna Coleman, and appeared in the 2017 comedy film The Hippopotamus. During the COVID-19 pandemic in 2020, he reprised Luke Smith for Farewell, Sarah Jane, a coda to The Sarah Jane Adventures which was released online to commemorate the ninth anniversary of series star Elisabeth Sladen's death.