Background
Marshall was born in Bath, Somerset and then moved with his family to Hong Kong and later to Canada.
Marshall was born in Bath, Somerset and then moved with his family to Hong Kong and later to Canada.
Upon his return to the United Kingdom, he was educated at the co-educational independent school, Wells Cathedral School, located in the cathedral city of Wells in Somerset and after failing his initial A-levels in his first year of sixth form, he enrolled at the Redroofs Theatre School in the town of Maidenhead in Berkshire for his final year of sixth form.
He is currently playing island lead detective DI Humphrey Goodman in Death In Paradise, having taken over the role in April 2013 for the show"s third series. In 2008 he was hospitalised with head injuries from a traffic accident in Bristol. Marshall made an early career appearance on the police series The Bill but it was in 2000 that his major breakthrough role came as Nick Harper in the British Broadcasting Corporation sitcom My Family.
In 2003 he appeared in the film Love Actually as Colin Frissell, a disgruntled Englishman who goes to Milwaukee, Wisconsin, in the United States to find love.
In 2004 Marshall appeared as Doctor of Science Luke Stone in the police drama series Murder City. From 2005 to 2011, Marshall appeared on television and in print for British Telecom Retail adverts, where he played the character Adam.
With Esther Hall portraying his character"s eventual wife Jane. He also played Dave in the British Broadcasting Corporation comedy series Citizen Khan in 2012.
Since departing his full-time role in My Family in 2003, Marshall has returned twice.
The first time was for one episode in season five in 2004 and the second was for a Comic Relief special in 2005. In an interview, he claimed that playing the part of Nick was awkward, as he was a lot older than the character. He finished working on the film Heist at the end of 2006, which aired in April 2008 on British Broadcasting Corporation Four.
During the summer of 2008, Marshall appeared at Trafalgar Studios in the first United Kingdom run of Neil LaBute"s play Fat Pig.
He became a regular playing the character Ethan on the series Traffic Light in 2011. In April 2013, it was announced that Marshall would be joining the cast of British Broadcasting Corporation drama Death In Paradise as the island"s new lead detective, DI Humphrey Goodman.
His character was introduced in the first episode of the third series which aired on 14 January 2014, with his first case being to solve the murder of his predecessor, DI Richard Poole (played by Ben Miller). Marshall starred as Tom Sanger alongside Annelise Hesme in the 2015 independent British romantic comedy "Sparks & Embers".