What would you like to ask the next Doctor? Email us your questions and we'll send a selection of them to the team making the show and some of them will be put to the next Doctor.

We obviously can't guarantee that every question you give us will be asked so try to think of the most original question, or the funniest, or something that you feel might interest people but may not have been asked before. We want great questions from you, so have a think about what you want to know and we'll make sure the next Doctor answers some of them live on air during Sunday's show.

William Hartnell will play The Doctor

William Hartnell is a film and Television actor well known for his 'tough guy' performances in several British films of the 1950's.

He was born William Henry Hartnell in the St Pancras district of London on 8th January 1908. England, His mother was unmarried and he was brought up partly by a foster mother. Through his membership of a boys' boxing club he met the art collector Hugh Blaker, who took an interest in the lad and became his unofficial guardian. As a keen follower of the theatre, Blaker helped the young Hartnell enter the Italia Conti Academy.

Hartnell entered the theatre in 1925 as a general stagehand. He appeared in a number of Shakespeare plays, including The Merchant of Venice (1926), Julius Caesar, As You Like It, Hamlet, The Tempest, Macbeth. He also appeared in She Stoops to Conquer, School for Scandal and Good Morning, Bill, before performing in Miss Elizabeth's Prisoner in 1928. It was in this play he worked with the actress Heather McIntyre whom Hartnell married the following year.

Hartnell made appearances in more than sixty British films, taking his first role in the 1932 film Say It With Music. Other roles included Freddy Fordum in Swinging the Lead , Pat Spencer in Nothing Like Publicity and Stubbs in Midnight at Madame Tussaud's. The outbreak of war in 1939 saw Hartnell join the Tank Corps where he served for eighteen months before being invalided out as the result of suffering a nervous breakdown.

Hartnell returned to acting playing a number of bit parts in several war time moves. In 1944 his career reached a turning point when he was cast as Sergeant Ned Fletcher in Carol Reed's film The Way Ahead. His success in playing the tough Army sergeant led to a career playing mainly policemen, soldiers, and thugs. He played the eponymous Sergeant in the first ever Carry on film, Carry on Sergeant. Other roles included a town councillor in the Boulting brothers' film Heavens Above! and Will Buckley in the film The Mouse That Roared alongside Peter Sellers.

In the early 1960's he was best known to British TV audiences for another army role, as Sergeant Major Percy Bullimore in The Army Game. In 1963 he won the role of 'Dad' Johnson in the film This Sporting Life. In the film he played an aging rugby league talent scout, a performance which caught the attention of Doctor Who producer Verity Lambert and Director Waris Hussein who asked Hartnell to play The Doctor.

Carole Ann Ford will play Susan

Carole Ann Ford is a film and Television actress who has appeared in several British TV dramas.

Carole Ann Ford was born in June 1940 and first appeared in a film at the age of eight. After appearing in a number of commercials and walk-on work, her first proper role was in the play Women of the Streets.

She appeared in the TV Movie Expresso Bongo and had roles in Horrors of the Black Museum, Probation Officer, The Ghost Train Murder, Emergency-Ward 10, Dixon of Dock Green, No Hiding Place, Crying Down the Lane, The Day of the Triffids, Mix Me a Person, Harpers West One, The Punch and Judy Man and Z-Cars.

It was her performance in Z-Cars that let her to being tested for the role of Susan in Doctor Who.

Jacqueline Hill will play Barbara

Jacqueline Hill is a British actress known for a number of character roles on television.

She was born Grace Jacqueline Hill on 17th December 1929 in Birmingham. She trained at the Royal Academy of Dramatic Art and made her stage debut in London's West End in The Shrike.

Hill first appeared on TV in 1953 playing Maureen in The Blue Parrot. Other roles included Grace Carney in Blood Money, Carrie Dean in Joyous Errand and Ellen Ferguson in The Flying Doctor.

In 1958 she married top director Alvin Rakoff, who cast her opposite Sean Connery in one of ABC TV's Armchair Theatre plays. In 1962 she played Sally Walker in The Six Proud Walkers . She also appeared in Out of This World and in an episode of Maigret.

Jacqueline Hill was friends with Doctor Who producer Verity Lambert, who suggested she should go forward for the role of Barbara.

William Russell will play Ian

William Russell is best known for playing the title role in The Adventures of Sir Lancelot the 1956 ITV series.

William Russell was born William Russell Enoch on 19 November 1924 in Sunderland. He was involved in organising entertainments during his national service in the Royal Air Force and then, after university, went into repertory theatre. He appeared in Hamlet in London's West End.

His first TV appearance came in 1940 in God Gave Him a Dog. Several other roles followed including playing Leslie Gowland in The Gay Dog, St. Ives in St. Ives and Count Rene D'Albert in Sword of Freedom.

His big break came in 1956 when he was cast as Sir Lancelot du Lac in The Adventures of Sir Lancelot. The series was made in colour and screened on ITV in the UK and on the NBC network in the United States nine days later. It is one of the very few British television series ever to have been screened on one of the major broadcast networks in the US and gave Russell recognition on both sides of the Atlantic.

Further success followed with the title roles in Nicholas Nickleby and David Copperfield as well as playing Hamlet in 1961. In 1963 he played St. John Rivers in Jane Eyre and also had a role in the feature film The Great Escape.

Originally the decision was taken not to include this release on the box set as it had previously been released as a standalone product. However after listening to feedback from our fans we have decided to include the episode and its prequel on the set. The price of the set will not be altered as a result of the change of contents

This is the first time we have undertaken a 52-part serial. It will be rather on the Tim Frazer pattern - a series of stories of varying lengths, each one starting during the last episode of the previous one. It will go on the air at 5.20-5.45 on Saturdays and is planned for family viewing with special attention to the 11-14 group.

Verity Lambert is a twenty-seven year old girl who has done a lot of commercial TV over here and has worked in the USA for David Susskind. She has been put on programme contract for a year to handle this new serial. The two directors, Waris Hussein and Rex Tucker, will be in charge of alternate stories beginning with Hussein on No. 1. Anthony Coburn is writing the first two stories and the third will be by John Lucarotti who has written a lot of television in the USA, Canada and commercial over here.

The first important point I must make is that this Dr Who series was devised jointly by Sydney Newman and Donald Wilson, and I have ascertained that at the time when they worked it out they had no knowledge whatever of the suggested puppet series The Time Travellers. The scriptwriter of the first ten episodes of Dr Who is Anthony Coburn who likewise had no knowledge whatever of The Time Travellers....

... while the idea of the two programmes is similar, ie the idea of crossing time borders, the two series are themselves completely different, one being for puppets and the other being for live actors, and there could be no possibility of there being plagiarism of any sort.