<P> Miniatures constructed by Mike Tucker and his company The Model Unit were used in filming for the Time War sequences, including a model of a Time Lord staser cannon and the War Doctor flying his TARDIS into and subsequently destroying several Daleks . The Dalek models used were 18 - inch voice interactive toys produced by Character Options . The technique of using Dalek toys as models for filming was a common method of presenting entire armies in the classic series . </P> <P> "The Night of the Doctor", an additional 7 - minute special, was released on 14 November 2013, and featured the Eighth Doctor (Paul McGann)'s regeneration into the War Doctor (John Hurt). Another 4 - minute special, entitled "The Last Day", was released on 20 November 2013 and saw the start of the Fall of Arcadia . </P> <P> On 4 November 2013, the BBC released the official synopsis: "The Doctors embark on their greatest adventure in this 50th anniversary special . In 2013, something terrible is awakening in London's National Gallery; in 1562, a murderous plot is afoot in Elizabethan England; and somewhere in space an ancient battle reaches its devastating conclusion . All of reality is at stake as the Doctor's own dangerous past comes back to haunt him ." </P> <P> The first trailer for the special was shown to attendees of San Diego Comic - Con in July 2013 . The BBC's decision not to release the trailer online to international fans was met with controversy . On 26 July, the BBC responded to criticisms by saying the trailer was intended to be exclusive to Comic - Con attendees and that content for all other audiences would be forthcoming at a later date . </P>

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