Matt Smith is an English actor, best known for his role as the Eleventh Doctor in Doctor Who.

Born in Northampton, England, Smith attended Northampton School for Boys and later studied drama at the University of East Anglia in Norwich.

Before landing his role in Doctor Who, Smith had a varied career in theatre and television. He made his professional debut in 2003 with the National Youth Theatre and quickly moved into television, securing roles in shows such as The Street and Party Animals.

Following his time as the Doctor, Smith's  starred in the critically acclaimed The Crown, where he portrayed Prince Philip, Duke of Edinburgh, alongside Claire Foy as Queen Elizabeth II. His performance was widely praised, earning him a Golden Globe nomination. He also featured in films such as Pride and Prejudice and Zombies (2016), The Terminator Genisys (2015), and Last Night in Soho (2021).

Outside of acting, Smith has a strong love for football and a passion for supporting his local club, Northampton Town. 

Jeffrey Stewart  is a Scottish actor, probably best known as PC Reg Hollis in the ITV drama The Bill, a role he played from 1984 to 2008.

In 2009, Stewart shot a film in Chester, New York portraying a German-Russian in a Soviet prison in Under Jakob's Ladder alongside Australian actor Christopher Elliott, and produced by Roberto Munoz. He won best actor at the 2011 Manhattan Film Festival for the role.^[3] He also voiced Mr. Tickle in The Mr. Men Show.

Stewart has played numerous roles in other television series, including Harry Fellows in Crossroads in 1981 (his first television appearance) and Dukkha in the Doctor Who story Kinda in 1982. He played a police constable in Hi-De-Hi! in 1983, the same year "Woodentop" (the pilot episode of "The Bill"), aired.

Reg Hollis is mentioned but not seen in "Woodentop", so Stewart's first appearance in the series was in the first regular episode, "Funny Ol' Business - Cops & Robbers". By March 2007 Stewart was the last member of the cast remaining from that first episode.

In 2009, Stewart appeared in the video for "Black and Blue" by Swedish band Miike Snow. The video, directed by Vince Haycock, was shot on location in Hackney, London, and featured Stewart as a recluse musician with a penchant for creating animatronic performers in his dingy apartment, and presented the long hair and a large beard he had grown in the year since he left The Bill.

Stewart was born in Aberdeen but moved with his family to Southampton, Hampshire when he was three months old. His father initially worked in the shipyards and then for Fawley oil refinery.

_{Biography from the Wikipedia article, licensed under CC-BY-SA} 

Ian Marter played Harry Sullivan appearing alongside fourth Doctor Tom Baker, from December 1974 to September 1975.

After graduating from Oxford University in 1969, Marter initially worked at the Bristol Old Vic theatre, where he was a stage manager as well as acting in various minor roles. In 1971 he auditioned for the regular role of Captain Mike Yates in the eighth season of Doctor Who, and although he did not win the part, he sufficiently impressed the production team to be kept in mind and cast in a supporting role in the 1973 story Carnival of Monsters.

The following year, he was cast in the role of Harry Sullivan, a character developed by the production team when they planned that the incoming Fourth Doctor would be portrayed by an older actor, and thus would not be able to handle the more physical action scenes. 

Marter remained involved with Doctor Who after his departure from the cast. With Tom Baker he co-wrote the script for a potential feature film version, provisionally titled Doctor Who Meets Scratchman, also known as Doctor Who and the Big Game, although this never came to fruition. 

He later became involved with the writing of novelisations of Doctor Who television stories for Target Books, penning nine adaptations in the late 1970s and early 1980s. 

He also wrote an original spin-off novel for Target, Harry Sullivan's War, starring the character he had played on screen, which was published in 1985

Outside of Doctor Who, Marter's acting career consisted mainly of guest roles in episodes of series such as the BBC's Bergerac (in 1981) and Granada Television's The Return of Sherlock Holmes (in 1986). He also had minor roles in several films, such as The Abominable Dr. Phibes (1971) and The Medusa Touch (1978). He lived and worked in New Zealand in the early 1980s, appearing in the New Zealand soap opera Close to Home from 1982.

Ian Marter  died suddenly at his home in London on his forty-second birthday in 1986, after suffering a heart attack brought on by complications of diabetes.

John Hallam was a Northern Irish character actor.

He appeared in many film and television roles including Nicholas and Alexandra (1971), Murphy's War (1971), The Pallisers (1974), The Mallens (1979), Flash Gordon (1980), Dragonslayer (1981), the BBC television adaptations of Prince Caspian and The Voyage of the Dawn Treader (1989) and Robin Hood: Prince of Thieves (1991). He also appears in the director's cut of the 1973 film The Wicker Man as McTaggart.

In 1973 he played the troubled Dr. Peter Conway in the science fiction series Moonbase 3.

He appeared in  Doctor Who as the memorable alien "Light" in the serial Ghost Light (1989). He was also known as Barnsey, the prison cell mate of Den Watts in EastEnders.

_{Biography from the Wikipedia article, licensed under CC-BY-SA}

Actor who had small roles in two Hartnell Stories.

Edmund Bailey was a British actor active from the 1960's and 1970's

He had parts in Dr Finley's Casebook, The Wednesday Play and Z Cars.

Presenter of Blue Peter from 1978-1980

Later became an award-winning war correspondent 

Ian Marter played Harry Sullivan appearing alongside fourth Doctor Tom Baker, from December 1974 to September 1975.

After graduating from Oxford University in 1969, Marter initially worked at the Bristol Old Vic theatre, where he was a stage manager as well as acting in various minor roles. In 1971 he auditioned for the regular role of Captain Mike Yates in the eighth season of Doctor Who, and although he did not win the part, he sufficiently impressed the production team to be kept in mind and cast in a supporting role in the 1973 story Carnival of Monsters.

The following year, he was cast in the role of Harry Sullivan, a character developed by the production team when they planned that the incoming Fourth Doctor would be portrayed by an older actor, and thus would not be able to handle the more physical action scenes. 

Marter remained involved with Doctor Who after his departure from the cast. With Tom Baker he co-wrote the script for a potential feature film version, provisionally titled Doctor Who Meets Scratchman, also known as Doctor Who and the Big Game, although this never came to fruition. 

He later became involved with the writing of novelisations of Doctor Who television stories for Target Books, penning nine adaptations in the late 1970s and early 1980s. 

He also wrote an original spin-off novel for Target, Harry Sullivan's War, starring the character he had played on screen, which was published in 1985

Outside of Doctor Who, Marter's acting career consisted mainly of guest roles in episodes of series such as the BBC's Bergerac (in 1981) and Granada Television's The Return of Sherlock Holmes (in 1986). He also had minor roles in several films, such as The Abominable Dr. Phibes (1971) and The Medusa Touch (1978). He lived and worked in New Zealand in the early 1980s, appearing in the New Zealand soap opera Close to Home from 1982.

Ian Marter  died suddenly at his home in London on his forty-second birthday in 1986, after suffering a heart attack brought on by complications of diabetes.