The Outlaws, one of several groups to use that name over the years, was a British instrumental group that recorded from 1961-64 for producer Joe Meek, the man responsible for The Tornadoes' chart-topping Telstar.
The group, led by guitarist Billy Kuy, was only marginally popular in the U.K. at the time (two lower level chart singles), but has since developed a cult following. Their sound is a bit reminiscent of The Shadows, but with a rawer edge.
The Outlaws' only album, Dream of the West, was released on HMV in 1961 and was briefly available on CD in 1993 on the BGO (Beat Goes On) label. It's long out of print and even used copies are expensive. Sample the album's content via the link below.
None of the tracks from Dream of the West are available as legal downloads, but here's another sampling of The Outlaws' western sound, Valley of the Sioux. This track was released as a single in 1961 but is not on the album.