Kingsman: The Secret Service has unveiled its first trailer, Digital Spy said.

The spy thriller reunites Kick-Ass director Matthew Vaughn with screenwriter Jane Goldman and Mark Millar, whose comic book (co-created with Dave Gibbons) serves as the basis for the spy thriller.

The film tells the story of a spy organisation that recruits an unrefined but promising street kid into the agency's ultra-competitive training programme just as a global threat emerges.

Colin Firth, Samuel L Jackson, Taron Egerton and Michael Caine star in Kingsman: The Secret Service, which opens in UK cinemas on October 17.