At the onset of the nineties, Robert Palmer duetted with them on their next UK Top 10 hit, "I’ll Be Your Baby Tonight," and 808 State charted with a remix of "One In Ten." Highlights such as these, whilst welcome, were then dwarfed by the release of "Promises and Lies" which became the group's biggest selling album, selling in excess of nine million copies worldwide. The biggest hit from "Promises And Lies" was "Can't Help Falling In Love", which brought the band their third UK No. 1 and would remain a favourite on American radio stations for years – especially after its inclusion on the soundtrack of the 1993 Sharon Stone film "Sliver."
By 1994, the constant touring had taken its toll and the band was ready for a well-earned rest – this after playing to record crowds around the world, including South Africa, where they performed to over 250,000 people in total. Virgin would fill the gap by releasing "The Best Of UB40 – Volume Two," containing hits like "Kingston Town," "Here I Am" and more recent efforts such as "Bring Me Your Cup," "Reggae Music" and "Until My Dying Day." During their sabbatical from UB40, several of the members worked on their own musical projects. Robin and Ali made a guest appearance on Pato Banton’s No. 1 hit "Baby Come Back," whilst Earl would have success producing house and drum & bass tracks. Ali Campbell also released his debut solo album "Big Love," which he’d recorded in Jamaica. Their adventures in Jamaica will result in several, celebrated encounters with various reggae legends. The first, UB40’s "UB40 Present The Dancehall Album," featuring Jamaican acts like Beenie Man, Mad Cobra and Lady Saw, appeared in 1998, and "UB40 Present The Fathers Of Reggae" in 2002. Robin has described the latter as one of the highlights of their career, since it featured many of the artists who’d inspired UB40 (among them Toots Hibbert, John Holt, Alton Ellis and the Mighty Diamonds), singing the group’s own material. Were it needed, the "Fathers" set offered proof of the respect UB40 have always been accorded in Jamaica, and especially among the island’s artists and musicians.