There appears to be some ambiguity as there are multiple artists with the name "Roy Thompson". However, one notable musician with this name is Roy Thompson, a British keyboardist who is most recognized for his involvement with the rock band Mark Knopfler's Notting Hillbillies. Thompson's style is primarily rooted in rock, with elements of country and blues. His keyboard work serves as a staple of the band's sound and is integral in the creation of their 1990 album, "Missing... Presumed Having a Good Time," which achieved significant success.