The six-part series spans 70 years of US history from 1825 and tells the story of the opening of the American West from the points of view of a family of settlers and a group of native American indians.
It features a cast and crew of more than 1,000 people including performances from 'Point Break' and 'Lethal Weapon' actor Gary Busey, 'Band of Brothers' star Matthew Settle and 'Goonies' actor Josh Brolin.
Produced by Turner Network Television in association with DreamWorks Television, each 90-minute episode of 'Into the West' cost $8m to make.
George McGhee, BBC controller of programme acquisitions, said: "The scale and investment in this magnificent epic is something that we could not reproduce on the BBC, and we are delighted to be able to give viewers the chance to see it in the UK."
'Into The West' was executive produced by Spielberg and will broadcast on BBC Two next year.
The deal to broadcast the epic western tale follows on from similar deals with Dreamworks for the critically acclaimed World War II drama 'Band of Brothers' and the alien abduction story 'Taken'.
'Into the West' kicked off in the US on June 10 to mixed reviews from critics.
"The photography is rich and beautiful, but with a huge cast, not enough time is spent developing the characters," the Inside Bay Area newspaper said.
"TNT's frontier series stands pretty tall in the saddle on its own. Sure, we don't get to know all the characters (there are 248 actors in the film) as well as we would have liked. And 12 hours is lengthy, but from what we've seen, 'West' tells a wide-ranging story with heart and grit," Kevin Thompson, TV writer at the Palm Beach Post, said.
'Into the West' follows in the footsteps of other TV western mini series such as 'How the West Was Won' in the 1970s and 'Lonesome Dove' in the 1980s.
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