He has appeared in several theatrical productions, most notably After Miss Julie and Frankenstein, the latter of which earned him an Olivier Award for Best Actor.

[4] Miller starred as the title character in the ABC comedy drama Eli Stone, for which he received a Satellite Award nomination for Best Actor.

From 2012 to 2019, he starred as a modern-day version of Sherlock Holmes in the CBS crime drama Elementary, which earned him his second Satellite Award nomination for Best Actor.

[6] Miller made his television debut with an uncredited appearance in the BBC series Doctor Who at the age of nine in the 1982 episode Kinda.

The following year he appeared in Jemima Shore and had a role as Charles Price in the serial drama Mansfield Park.

[citation needed] In 1993's third instalment of Prime Suspect, Miller played a young man who had been victimised as a child by a paedophile.

Miller later revealed he had been offered a contract to remain on the show but declined: "It was five weeks' work and I made more money there than I ever had in my life.

In early 2010, it was reported he was set to portray Rick Grimes in the television adaptation of the comic The Walking Dead.

[8] In 2011, Miller auditioned for the role of Sherlock Holmes in the CBS adaptation based on the works of Arthur Conan Doyle.

However, after reviewing the script he accepted the part, and it was officially announced he would star in Elementary, alongside Lucy Liu.

I read and re-read the book and I pretended to be Scottish all the time I was in Glasgow, hanging around with Scots, picking up bits and pieces on the street and in bars.

"[citation needed] In 1997, he played Billy Prior in the film adaptation of Pat Barker's World War I novel Regeneration.

He co-starred in the film Love, Honour and Obey as Johnny, a London street kid getting mixed up with a notorious British gangster.

He was considered as the third teammate to join Ben Fogle and James Cracknell in Team QinetiQ for the Amundsen Omega 3 South Pole Race in January 2009.

In 2014, he addressed the Congressional caucus in Washington, D.C., on behalf of rare disease organisations, in the hope of securing funding for treatment research.

In May 2018, he took part in an exhibition Muay Thai bout held at Chok Sabai Gym in New York City, which followed a five-week training camp leading up to the event.

[24] On 1 February 2019, Miller made his Muay Thai debut at Broad Street Ballroom in New York City.