New Doctor Who star Peter Capaldi will travel to Australia without the aid of a Tardis as he and co-star Jenna Coleman go on a world tour to promote the sci-fi TV show.

They are to visit five continents in the space of 12 days, calling in at seven cities, including Sydney, ahead of the launch of the new series, Capaldi's first as The Doctor.

New Doctor Who Peter Capaldi is on his way to Sydney. Credit:BBC

The pair will be accompanied by the BBC1 program's executive producer Steven Moffatt when they head out on their world tour jaunt in August for publicity and fan events.

The tour begins in the UK, visiting Cardiff on August 7, moving on to London and winding up in Rio de Janeiro in Brazil on August 19. Along the route it will call in to South Korea, Australia, the US and Mexico.