On This Day (USA) - 18 April

The Keys of Marinus: The Velvet Web premiered on BBC One in 1964 at 5:31pm BST, watched by 9.40 million viewers.

The Ambassadors of Death: Episode 5 premiered on BBC One in 1970 at 5:14pm BST, watched by 7.10 million viewers.

The Doctor prepares to pilot the Recovery 7 ship into space, but Reegan sabotages the fuel supply which will send the Doctor into the sun.

Voyage of the Damned premiered on SyFy (East Coast Feed) in 2008 at 8:30pm EDT

Jamie Davis is 43 today - credited as Davey in Invasion of the Bane(SJA)

Jamie Davis is an English actor. He is known for playing Harley Lawson in Footballers' Wives and its spin-offFootballers' Wives: Extra Time, Leon Taylor in Hex and Alex Partridge in "Candy Cabs".

Davis auditioned for and won the role of Harley Lawson in Footballers' Wives during his third year at drama school. He portrayed Harley for the whole of the third and fourth series of Footballers' Wives and in two episodes of its spin-off, Footballers� Wives: Extra Time.

Between the third and fourth series of Footballers� Wives, Davis appeared alongside John Malkovich in Colour Me Kubrick (2005) and played Leon Taylor in the first season of Hex. He left Footballers� Wives to reprise the role of Leon in Hex season two.

Davis went on to play Davey in The Sarah Jane Adventures episode "Invasion of the Bane" and Steve Sharpe in The Amazing Mrs Pritchard. He has also appeared in episodes of The BillCasualty and Two Pints of Lager and a Packet of Crisps.

David Tennant is 53 today - 158 credits, including The Doctor in Children in Need Special

David Tennant was born in Bathgate, West Lothian in Scotland and grew up in Ralston, Renfrewshire, where his father, the Reverend "Sandy" McDonald, was the local Church of Scotland minister.

Tennant was educated at Ralston Primary and Paisley Grammar School He acted in school productions throughout primary and secondary school. At 16 he passed an audition for the Royal Scottish Academy of Music and Drama, and studied there between the ages of 17-20. He adopted the professional name "Tennant" – inspired by Neil Tennant of the Pet Shop Boys, after reading a copy of Smash Hits magazine. .

Tennant's first professional role upon graduating from drama school was in a staging of The Resistible Rise of Arturo Ui co-starring Ashley Jensen. Tennant also made an early television appearance in the Scottish TV sitcom Rab C Nesbitt as a transsexual barmaid called Davina. .

Tennant's first major TV role was as the manic depressive Campbell in the Scottish drama series Takin' Over the Asylum (1994). One of his earliest big screen roles was in Jude (1996), in which he shared a scene with Christopher Eccleston, playing a drunken undergraduate who challenges Eccleston's Jude to prove his intellect. His first Shakespearean role for the the Royal Shakespeare Company was in As You Like It (1996); playing the jester Touchstone. He subsequently specialised in comic roles, playing Antipholus of Syracuse inThe Comedy of Errors and Captain Jack Absolute in The Rivals, although he also played the tragic role of Romeo in Romeo and Juliet. Tennant also contributed to several audio dramatisations of Shakespeare for the Arkangel Shakespeare series (1998). His roles include a reprisal of his Antipholus of Syracuse in The Comedy of Errors, as well as Launcelot Gobbo in The Merchant of Venice, Edgar/Poor Tom in King Lear, and Mercutio in Romeo and Juliet. In 1995, Tennant appeared at the Royal National Theatre, London, playing the role of Nicholas Beckett in Joe Orton's What the Butler Saw. .

Tennant appeared in the first episode of Reeves and Mortimer's re-vamped Randall & Hopkirk (Deceased) in 2000, playing an eccentric artist. Other roles include parts in He Knew He Was Right (2004) Blackpool (2004), Casanova (2005) and The Quatermass Experiment (2005). He appeared in Stephen Fry's Bright Young Things (2003), and played Barty Crouch Jr. in Harry Potter and the Goblet of Fire. .

In 2005 he played the title role in Casanova, written by Russell T Davies and produced by Julie Gardner. The role brought him to the attention of the two Doctor Who executives who were looking for a replacement for Christopher Eccleston who left the series after one season. On 16 April 2005, just after the series returned to British television, the BBC issued a statement naming Tennant, a lifelong Doctor Who fan, as the Tenth Doctor. .

While playing the Doctor, Tennant starred in Recovery, a 90-minute BBC1 drama written by Tony Marchant. Tennant played Alan, a self-made building site manager who attempted to rebuild his life after suffering a debilitating brain injury. Later in 2007 he starred in Learners, a BBC comedy drama written by and starring Jessica Hynes. In 2009 he worked on a film version of the RSC's 2008 Hamlet for BBC2. In December 2009, he filmed the lead in an NBC pilot, Rex Is Not Your Lawyer, playing Rex, a Chicago lawyer who starts to coach clients to represent themselves when he starts suffering panic attacks. The pilot was not picked up and the project was shelved. In October 2010 he starred as Dave, a man struggling to raise five children after the death of his partner, in the British drama Single Father. .

In 2008 Tennant played Hamlet at the RSC as well as with Berowne (in Love's Labours Lost) appearing at the Courtyard Theatre in Stratford-upon-Avon Hamlet transferred to the Novello Theatre in London's West End in December 2008, but Tennant suffered a prolapsed disc during previews and was unable to perform for three weeks. .

In 2011 he stared in the BBC Two British TV film United. In the summer he appeared with former co-star Catherine Tate in a stage production of William Shakespeare's Much Ado About Nothing.

Tennant will return to the RSC for the company's 2013 winter season, playing the title role in Richard II at Stratford-upon-Avon and at the Barbican Centre in London.

Camille Coduri is 59 today - 30 credits, including Jackie Tyler in Rose

Camille Coduri  is an English actress from Wandsworth in London.. She is best known for her role in Doctor Who as Jackie Tyler.

She featured in the film comedies Nuns on the Run (1990) and King Ralph (1991). She has also appeared extensively on British television, appearing in guest roles in episodes of series such as Rumpole of the Bailey, A Bit of Fry and Laurie, Boon, A Touch of Frost and in the BBC's 1997 adaptation of Henry Fielding's novel The History of Tom Jones, a Foundling. She appeared in BBC Three's six-part drama series Sinchronicity in 2006.

Coduri was cast in the revived Doctor Who series as Jackie Tyler, mother of new companion Rose Tyler. 

She participated in the Doctor Who-themed episode of The Weakest Link, first broadcast on 30 March 2007. She was statistically the weakest link in the third round and came close to being voted out two times. However she survived both times and went on to win the game (beating Noel Clarke). She split the prize money of �16,550 between two charities - half for multiple sclerosis and half for children who are carers.

In an April 2010 episode of Ashes to Ashes, Coduri plays a woman who helps DCI Gene Hunt and DI Alex Drake during an investigation. In September 2010, she joined BBC Three comedy, Him & Her playing Shelly.

Eric Roberts is 68 today - 3 credits, including The Master in The TV Movie

Eric Roberts is an American actor. His career began with King of the Gypsies (1978), earning a Golden Globe nomination for best actor debut. He starred as the protagonist in the 1980 dramatisation of Willa Cather's 1905 short storyPaul's Case. He earned both a Golden Globe and Academy Award nomination for his supporting role in Runaway Train (1985). Through the 1990s and 2000s he maintained dramatic film and TV-movie roles while appearing in TV series. His television work includes three seasons with the sitcom Less than Perfect and a recurring role on the NBC drama Heroes. His sisters Julia Roberts and Lisa Roberts Gillan, and daughter Emma Roberts, are also actors.

Eric got his start on the now-defunct NBC daytime soap opera Another World originating the role of Ted Bancroft from February 14, 1977, to June 17, 1977.

Roberts received Golden Globe nominations for his early starring roles in King of the Gypsies (1978) and Star 80 (1983). He was nominated for the Academy Award for Best Supporting Actorin 1985 for his role as the escaped convict Buck in the film Runaway Train; the award went to Don Ameche in Cocoon. In 1987, he won the Theatre World Award for his Broadway debut performance in Burn This.

Roberts's other starring roles included Raggedy Man (1981), The Pope of Greenwich Village (1984), The Coca-Cola Kid (1985), Nobody's Fool (1986), Best of the Best (1989), By the Sword(1991), Best of the Best 2 (1993), The Immortals (1995), La Cucaracha (1998), Purgatory (1999), and Stiletto Dance (2001). He also had major supporting roles in Final Analysis (1992), The Specialist (1994), and the film Shannon's Rainbow (2009). He played the Archangel Michael in The Prophecy II (1997).

In 1996, he appeared in the Doctor Who Television film in the role of the fourth Master. As of 2011, he is the only American actor to play the role. 

Harold Innocent (died 1993 aged 60) would be 91 today - 2 credits, including Gilbert M. in The Happiness Patrol

Harold Innocent was a British actor who appeared in many film and television roles.

After attending Broad Street Secondary Modern School in Coventry, Innocent worked for a short time as an office clerk. Realising quickly that he was not suited to this career, he turned instead to acting, studying at the Birmingham School of Speech Training and Dramatic Art. After National Service in the RAF Innocent went into repertory theatre. Later he moved to Hollywood where he appeared in Alfred Hitchcock Presents in 1959, as well other television series such as The Barbara Stanwyck Show.

On his return to Britain he appeared at the Nottingham Playhouse, the Royal Lyceum Theatre in Edinburgh, the Young Vic, the National Theatre, the Royal Shakespeare Company and the Bristol Old Vic. In 1984 with the RSC he appeared in Richard III and Love's Labour's Lost. With the same company he appeared in Henry V, playing both the Archbishop of Canterbury and the Duke of Burgundy. He played the latter role in the 1989 film version for Kenneth Branagh. In 1991 he appeared in Alan Bennett's The Madness of George III, again at the National Theatre.

Innocent's television appearances include the 1969 pilot episode of Randall and Hopkirk (Deceased)My Late Lamented Friend and Partner as well as Crown CourtThe ProfessionalsMinderInspector MorseCampion, the Bursar in Porterhouse Blue, and EastEnders.

His film roles included Brazil (1984), The Tall Guy (1988), Without a Clue (1988), Henry V (1989) and Robin Hood: Prince of Thieves (1991). On stage he appeared in a musical version of Alice in Wonderland at the Lyric Theatre in Hammersmith in 1986, and made his operatic debut inGilbert and Sullivan's Ruddigore for a centenary performance in 1987 at Sadler's Wells.

He appeared in the Doctor Who serial The Happiness Patrol as Gilbert M, and later the BBC Radio 5 audio drama The Paradise of Death.

He died in London in 1993 after a short illness, aged 60.

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

Angus Lennie (died 2014 aged 84) would be 94 today - 2 credits, including Storr in The Ice Warriors

Angus Lennie is a Scottish actor best known for his film appearance as Steve McQueen's friend Archibald Ives in the 1963 film The Great Escape. 

He appeared in the Doctor Who stories The Ice Warriors and Terror of the Zygons.

He was also known for being in the television soap opera Crossroads.

Other TV credits include: The Saint, The Borderers, Z Cars, Rumpole of the Bailey, Lovejoy, The Onedin Line, All Night Long, Keeping Up Appearances and Monarch of the Glen.

His film appearances include: 633 Squadron, Tunes of Glory, Oh! What a Lovely War and a significant role in The Great Escape as the diminutive serial escaper Flying Officer Archibald Ives (nicknamed The Mole).

He has appeared in many stage productions including A Midsummer Night's Dream and pantomimes.

Peter Jeffrey (died 1999 aged 70) would be 95 today - 2 credits, including Pilot in The Macra Terror

Peter Jeffrey  was a British actor with many roles in television and film.

He had two main roles in Doctor Who, as Count Grendel in the serial The Androids of Tara and as the Colony Pilot in The Macra Terror. It is reputed he had been offered the role of the lead character in the show by Innes Lloyd in 1966, but turned it down; Patrick Troughton was cast instead. 

Jeffrey was born in Bristol, the son of Florence Alice (n�e Weight) and Arthur Winfred Gilbert Jeffrey. 

He was educated at Harrow School and Pembroke College, Cambridge but had no formal training as an actor. After many years on stage with the Bristol Old Vic and the Royal Shakespeare Company, he became a very familiar face to British television viewers. Numerous television roles include the BBC serial Elizabeth R, he played King Philip II of Spain. He also appeared inPorridgeQuillerRising DampNannyMinderYes Minister and many others.

Jeffrey died on 25 December 1999 from prostate cancer.

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

David Whitaker (died 1980 aged 51) would be 96 today - 19 credits, including Story Editor for An Unearthly Child

David Whitaker was born in KnebworthHertfordshire.

He was the first Script Editor for Doctor Who, working on the first fifty one episodes in the series.  In that capacity he was responsible for some of the most iconic elements of the programme, still present in the current series.

He also wrote a number of Doctor Who serials himself. His scripts for the series include The Crusade (1965), The Power of the Daleks (1966) and The Evil of the Daleks (1967), The Enemy of the World (1967/8) and The Wheel in Space (1968, from a story by Kit Pedler). Other Dalek work included writing the Dalek comic strip in the children's magazine, TV Century 21, and the 1965 stage play The Curse of the Daleks.

In 1964, Whitaker became the first person to write a novelised adaptation of a Doctor Who serial (ultimately, more than 150 such books would be published over the next 30 years). His book, Doctor Who in an Exciting Adventure with the Daleks, was based upon Terry Nation's teleplay for the first Dalek story. Later in 1973Target Books purchased the rights to the novelisation and issued it under the jacket title Doctor Who and the Daleks.

In 1965, Whitaker wrote his second Doctor Who novelisation, this time based upon his own script, The Crusade. Both books were originally published by Frederick Muller, with the Dalek story also having a paperback release by Armada; in 1973 Whitaker's books (along with a third novelisation by Bill Strutton based upon The Web Planet) were republished by Target Books, launching its prolific series of novelisations.

At the time of his death, Whitaker was undergoing treatment for cancer. He died leaving his novelisation of his 1968 serial The Enemy of the World only partly finished and his plans to adapt The Evil of the Daleks never coming to pass. The adaptation of The Enemy of the World was completed later by Ian Marter, andThe Evil of the Daleks was eventually adapted by John Peel and released in 1993.

Alan Wells (died 1993) - credited as Scientist in The Moonbase

Alan Wells played a Scientist in the 1967 Doctor Who story The Moonbase.

James Bate (died 1992 aged 47) - credited as Amyand in Planet of Fire

Actor who played Amyand in Planet of Fire

Francis de Wolff (died 1984 aged 71) - 2 credits, including Agamemnon in The Myth Makers

Francis de Wolff  was an English character actor. Large, bearded, and beetle-browed, he was often cast as villains in both film and television.

He played Agamemnon in the 1965 story The Myth Makers.

Born in Essex, he made his film debut in Flame in the Heather in 1935, and went on to make many other appearances in such films as Fire Over England (1936), Treasure Island (1950),Scrooge (1951), as the Ghost of Christmas Present, Ivanhoe (1952), Moby Dick (1956), Saint Joan (1957), From Russia with Love (1963), Carry On Cleo (1964) and The Three Musketeers(1973).

He is perhaps best remembered as a supporting player in horror films of the 1950s and 1960s, many of them for Hammer Studios. These include Corridors of Blood (1958), The Hound of the Baskervilles (1959), The Man Who Could Cheat Death (1959), The Two Faces of Dr. Jekyll(1960), Devil Doll (1963) and The Black Torment (1964).

His television appearances include The AvengersDanger ManDixon of Dock GreenJesus of NazarethMaigretPaul TempleThe Saint, and The Tomorrow People.

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